258561920

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:296

約数の個数: 128

約数和(自身を含む): 648842400

約数和(自身を除く): 390280480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 61, 64, 74, 80, 122, 128, 148, 160, 179, 185, 244, 296, 305, 320, 358, 370, 488, 592, 610, 640, 716, 740, 895, 976, 1184, 1220, 1432, 1480, 1790, 1952, 2257, 2368, 2440, 2864, 2960, 3580, 3904, 4514, 4736, 4880, 5728, 5920, 6623, 7160, 7808, 9028, 9760, 10919, 11285, 11456, 11840, 13246, 14320, 18056, 19520, 21838, 22570, 22912, 23680, 26492, 28640, 33115, 36112, 39040, 43676, 45140, 52984, 54595, 57280, 66230, 72224, 87352, 90280, 105968, 109190, 114560, 132460, 144448, 174704, 180560, 211936, 218380, 264920, 288896, 349408, 361120, 404003, 423872, 436760, 529840, 698816, 722240, 808006, 847744, 873520, 1059680, 1397632, 1444480, 1616012, 1747040, 2020015, 2119360, 3232024, 3494080, 4040030, 4238720, 6464048, 6988160, 8080060, 12928096, 16160120, 25856192, 32320240, 51712384, 64640480, 129280960, 258561920]

約数ペア:

[(1, 258561920), (2, 129280960), (4, 64640480), (5, 51712384), (8, 32320240), (10, 25856192), (16, 16160120), (20, 12928096), (32, 8080060), (37, 6988160), (40, 6464048), (61, 4238720), (64, 4040030), (74, 3494080), (80, 3232024), (122, 2119360), (128, 2020015), (148, 1747040), (160, 1616012), (179, 1444480), (185, 1397632), (244, 1059680), (296, 873520), (305, 847744), (320, 808006), (358, 722240), (370, 698816), (488, 529840), (592, 436760), (610, 423872), (640, 404003), (716, 361120), (740, 349408), (895, 288896), (976, 264920), (1184, 218380), (1220, 211936), (1432, 180560), (1480, 174704), (1790, 144448), (1952, 132460), (2257, 114560), (2368, 109190), (2440, 105968), (2864, 90280), (2960, 87352), (3580, 72224), (3904, 66230), (4514, 57280), (4736, 54595), (4880, 52984), (5728, 45140), (5920, 43676), (6623, 39040), (7160, 36112), (7808, 33115), (9028, 28640), (9760, 26492), (10919, 23680), (11285, 22912), (11456, 22570), (11840, 21838), (13246, 19520), (14320, 18056)]