656145280

素因数分解:

$2^7\times 5^1\times 7^5\times {\mathrm{61}}^1$

素因数の和:115

約数の個数: 192

約数和(自身を含む): 1860014880

約数和(自身を除く): 1203869600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 61, 64, 70, 80, 98, 112, 122, 128, 140, 160, 196, 224, 244, 245, 280, 305, 320, 343, 392, 427, 448, 488, 490, 560, 610, 640, 686, 784, 854, 896, 976, 980, 1120, 1220, 1372, 1568, 1708, 1715, 1952, 1960, 2135, 2240, 2401, 2440, 2744, 2989, 3136, 3416, 3430, 3904, 3920, 4270, 4480, 4802, 4880, 5488, 5978, 6272, 6832, 6860, 7808, 7840, 8540, 9604, 9760, 10976, 11956, 12005, 13664, 13720, 14945, 15680, 16807, 17080, 19208, 19520, 20923, 21952, 23912, 24010, 27328, 27440, 29890, 31360, 33614, 34160, 38416, 39040, 41846, 43904, 47824, 48020, 54656, 54880, 59780, 67228, 68320, 76832, 83692, 84035, 95648, 96040, 104615, 109760, 119560, 134456, 136640, 146461, 153664, 167384, 168070, 191296, 192080, 209230, 219520, 239120, 268912, 273280, 292922, 307328, 334768, 336140, 382592, 384160, 418460, 478240, 537824, 585844, 669536, 672280, 732305, 768320, 836920, 956480, 1025227, 1075648, 1171688, 1339072, 1344560, 1464610, 1536640, 1673840, 1912960, 2050454, 2151296, 2343376, 2678144, 2689120, 2929220, 3347680, 4100908, 4686752, 5126135, 5378240, 5858440, 6695360, 8201816, 9373504, 10252270, 10756480, 11716880, 13390720, 16403632, 18747008, 20504540, 23433760, 32807264, 41009080, 46867520, 65614528, 82018160, 93735040, 131229056, 164036320, 328072640, 656145280]

約数ペア:

[(1, 656145280), (2, 328072640), (4, 164036320), (5, 131229056), (7, 93735040), (8, 82018160), (10, 65614528), (14, 46867520), (16, 41009080), (20, 32807264), (28, 23433760), (32, 20504540), (35, 18747008), (40, 16403632), (49, 13390720), (56, 11716880), (61, 10756480), (64, 10252270), (70, 9373504), (80, 8201816), (98, 6695360), (112, 5858440), (122, 5378240), (128, 5126135), (140, 4686752), (160, 4100908), (196, 3347680), (224, 2929220), (244, 2689120), (245, 2678144), (280, 2343376), (305, 2151296), (320, 2050454), (343, 1912960), (392, 1673840), (427, 1536640), (448, 1464610), (488, 1344560), (490, 1339072), (560, 1171688), (610, 1075648), (640, 1025227), (686, 956480), (784, 836920), (854, 768320), (896, 732305), (976, 672280), (980, 669536), (1120, 585844), (1220, 537824), (1372, 478240), (1568, 418460), (1708, 384160), (1715, 382592), (1952, 336140), (1960, 334768), (2135, 307328), (2240, 292922), (2401, 273280), (2440, 268912), (2744, 239120), (2989, 219520), (3136, 209230), (3416, 192080), (3430, 191296), (3904, 168070), (3920, 167384), (4270, 153664), (4480, 146461), (4802, 136640), (4880, 134456), (5488, 119560), (5978, 109760), (6272, 104615), (6832, 96040), (6860, 95648), (7808, 84035), (7840, 83692), (8540, 76832), (9604, 68320), (9760, 67228), (10976, 59780), (11956, 54880), (12005, 54656), (13664, 48020), (13720, 47824), (14945, 43904), (15680, 41846), (16807, 39040), (17080, 38416), (19208, 34160), (19520, 33614), (20923, 31360), (21952, 29890), (23912, 27440), (24010, 27328)]