16991520

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1$

素因数の和:427

約数の個数: 192

約数和(自身を含む): 66044160

約数和(自身を除く): 49052640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 32, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 96, 104, 105, 112, 120, 130, 140, 156, 160, 168, 182, 195, 208, 210, 224, 240, 260, 273, 280, 312, 336, 364, 389, 390, 416, 420, 455, 480, 520, 546, 560, 624, 672, 728, 778, 780, 840, 910, 1040, 1092, 1120, 1167, 1248, 1365, 1456, 1556, 1560, 1680, 1820, 1945, 2080, 2184, 2334, 2723, 2730, 2912, 3112, 3120, 3360, 3640, 3890, 4368, 4668, 5057, 5446, 5460, 5835, 6224, 6240, 7280, 7780, 8169, 8736, 9336, 10114, 10892, 10920, 11670, 12448, 13615, 14560, 15171, 15560, 16338, 18672, 20228, 21784, 21840, 23340, 25285, 27230, 30342, 31120, 32676, 35399, 37344, 40456, 40845, 43568, 43680, 46680, 50570, 54460, 60684, 62240, 65352, 70798, 75855, 80912, 81690, 87136, 93360, 101140, 106197, 108920, 121368, 130704, 141596, 151710, 161824, 163380, 176995, 186720, 202280, 212394, 217840, 242736, 261408, 283192, 303420, 326760, 353990, 404560, 424788, 435680, 485472, 530985, 566384, 606840, 653520, 707980, 809120, 849576, 1061970, 1132768, 1213680, 1307040, 1415960, 1699152, 2123940, 2427360, 2831920, 3398304, 4247880, 5663840, 8495760, 16991520]

約数ペア:

[(1, 16991520), (2, 8495760), (3, 5663840), (4, 4247880), (5, 3398304), (6, 2831920), (7, 2427360), (8, 2123940), (10, 1699152), (12, 1415960), (13, 1307040), (14, 1213680), (15, 1132768), (16, 1061970), (20, 849576), (21, 809120), (24, 707980), (26, 653520), (28, 606840), (30, 566384), (32, 530985), (35, 485472), (39, 435680), (40, 424788), (42, 404560), (48, 353990), (52, 326760), (56, 303420), (60, 283192), (65, 261408), (70, 242736), (78, 217840), (80, 212394), (84, 202280), (91, 186720), (96, 176995), (104, 163380), (105, 161824), (112, 151710), (120, 141596), (130, 130704), (140, 121368), (156, 108920), (160, 106197), (168, 101140), (182, 93360), (195, 87136), (208, 81690), (210, 80912), (224, 75855), (240, 70798), (260, 65352), (273, 62240), (280, 60684), (312, 54460), (336, 50570), (364, 46680), (389, 43680), (390, 43568), (416, 40845), (420, 40456), (455, 37344), (480, 35399), (520, 32676), (546, 31120), (560, 30342), (624, 27230), (672, 25285), (728, 23340), (778, 21840), (780, 21784), (840, 20228), (910, 18672), (1040, 16338), (1092, 15560), (1120, 15171), (1167, 14560), (1248, 13615), (1365, 12448), (1456, 11670), (1556, 10920), (1560, 10892), (1680, 10114), (1820, 9336), (1945, 8736), (2080, 8169), (2184, 7780), (2334, 7280), (2723, 6240), (2730, 6224), (2912, 5835), (3112, 5460), (3120, 5446), (3360, 5057), (3640, 4668), (3890, 4368)]