20542080

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{823}}^1$

素因数の和:858

約数の個数: 128

約数和(自身を含む): 70600320

約数和(自身を除く): 50058240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 384, 390, 416, 480, 520, 624, 640, 780, 823, 832, 960, 1040, 1248, 1560, 1646, 1664, 1920, 2080, 2469, 2496, 3120, 3292, 4115, 4160, 4938, 4992, 6240, 6584, 8230, 8320, 9876, 10699, 12345, 12480, 13168, 16460, 19752, 21398, 24690, 24960, 26336, 32097, 32920, 39504, 42796, 49380, 52672, 53495, 64194, 65840, 79008, 85592, 98760, 105344, 106990, 128388, 131680, 158016, 160485, 171184, 197520, 213980, 256776, 263360, 316032, 320970, 342368, 395040, 427960, 513552, 526720, 641940, 684736, 790080, 855920, 1027104, 1283880, 1369472, 1580160, 1711840, 2054208, 2567760, 3423680, 4108416, 5135520, 6847360, 10271040, 20542080]

約数ペア:

[(1, 20542080), (2, 10271040), (3, 6847360), (4, 5135520), (5, 4108416), (6, 3423680), (8, 2567760), (10, 2054208), (12, 1711840), (13, 1580160), (15, 1369472), (16, 1283880), (20, 1027104), (24, 855920), (26, 790080), (30, 684736), (32, 641940), (39, 526720), (40, 513552), (48, 427960), (52, 395040), (60, 342368), (64, 320970), (65, 316032), (78, 263360), (80, 256776), (96, 213980), (104, 197520), (120, 171184), (128, 160485), (130, 158016), (156, 131680), (160, 128388), (192, 106990), (195, 105344), (208, 98760), (240, 85592), (260, 79008), (312, 65840), (320, 64194), (384, 53495), (390, 52672), (416, 49380), (480, 42796), (520, 39504), (624, 32920), (640, 32097), (780, 26336), (823, 24960), (832, 24690), (960, 21398), (1040, 19752), (1248, 16460), (1560, 13168), (1646, 12480), (1664, 12345), (1920, 10699), (2080, 9876), (2469, 8320), (2496, 8230), (3120, 6584), (3292, 6240), (4115, 4992), (4160, 4938)]