128404920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2153}}^1$

素因数の和:2245

約数の個数: 128

約数和(自身を含む): 446653440

約数和(自身を除く): 318248520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 71, 84, 105, 120, 140, 142, 168, 210, 213, 280, 284, 355, 420, 426, 497, 568, 710, 840, 852, 994, 1065, 1420, 1491, 1704, 1988, 2130, 2153, 2485, 2840, 2982, 3976, 4260, 4306, 4970, 5964, 6459, 7455, 8520, 8612, 9940, 10765, 11928, 12918, 14910, 15071, 17224, 19880, 21530, 25836, 29820, 30142, 32295, 43060, 45213, 51672, 59640, 60284, 64590, 75355, 86120, 90426, 120568, 129180, 150710, 152863, 180852, 226065, 258360, 301420, 305726, 361704, 452130, 458589, 602840, 611452, 764315, 904260, 917178, 1070041, 1222904, 1528630, 1808520, 1834356, 2140082, 2292945, 3057260, 3210123, 3668712, 4280164, 4585890, 5350205, 6114520, 6420246, 8560328, 9171780, 10700410, 12840492, 16050615, 18343560, 21400820, 25680984, 32101230, 42801640, 64202460, 128404920]

約数ペア:

[(1, 128404920), (2, 64202460), (3, 42801640), (4, 32101230), (5, 25680984), (6, 21400820), (7, 18343560), (8, 16050615), (10, 12840492), (12, 10700410), (14, 9171780), (15, 8560328), (20, 6420246), (21, 6114520), (24, 5350205), (28, 4585890), (30, 4280164), (35, 3668712), (40, 3210123), (42, 3057260), (56, 2292945), (60, 2140082), (70, 1834356), (71, 1808520), (84, 1528630), (105, 1222904), (120, 1070041), (140, 917178), (142, 904260), (168, 764315), (210, 611452), (213, 602840), (280, 458589), (284, 452130), (355, 361704), (420, 305726), (426, 301420), (497, 258360), (568, 226065), (710, 180852), (840, 152863), (852, 150710), (994, 129180), (1065, 120568), (1420, 90426), (1491, 86120), (1704, 75355), (1988, 64590), (2130, 60284), (2153, 59640), (2485, 51672), (2840, 45213), (2982, 43060), (3976, 32295), (4260, 30142), (4306, 29820), (4970, 25836), (5964, 21530), (6459, 19880), (7455, 17224), (8520, 15071), (8612, 14910), (9940, 12918), (10765, 11928)]