161399680

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1021}}^1$

素因数の和:1072

約数の個数: 128

約数和(自身を含む): 437824800

約数和(自身を除く): 276425120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 128, 130, 152, 160, 190, 208, 247, 260, 304, 320, 380, 416, 494, 520, 608, 640, 760, 832, 988, 1021, 1040, 1216, 1235, 1520, 1664, 1976, 2042, 2080, 2432, 2470, 3040, 3952, 4084, 4160, 4940, 5105, 6080, 7904, 8168, 8320, 9880, 10210, 12160, 13273, 15808, 16336, 19399, 19760, 20420, 26546, 31616, 32672, 38798, 39520, 40840, 53092, 65344, 66365, 77596, 79040, 81680, 96995, 106184, 130688, 132730, 155192, 158080, 163360, 193990, 212368, 252187, 265460, 310384, 326720, 387980, 424736, 504374, 530920, 620768, 653440, 775960, 849472, 1008748, 1061840, 1241536, 1260935, 1551920, 1698944, 2017496, 2123680, 2483072, 2521870, 3103840, 4034992, 4247360, 5043740, 6207680, 8069984, 8494720, 10087480, 12415360, 16139968, 20174960, 32279936, 40349920, 80699840, 161399680]

約数ペア:

[(1, 161399680), (2, 80699840), (4, 40349920), (5, 32279936), (8, 20174960), (10, 16139968), (13, 12415360), (16, 10087480), (19, 8494720), (20, 8069984), (26, 6207680), (32, 5043740), (38, 4247360), (40, 4034992), (52, 3103840), (64, 2521870), (65, 2483072), (76, 2123680), (80, 2017496), (95, 1698944), (104, 1551920), (128, 1260935), (130, 1241536), (152, 1061840), (160, 1008748), (190, 849472), (208, 775960), (247, 653440), (260, 620768), (304, 530920), (320, 504374), (380, 424736), (416, 387980), (494, 326720), (520, 310384), (608, 265460), (640, 252187), (760, 212368), (832, 193990), (988, 163360), (1021, 158080), (1040, 155192), (1216, 132730), (1235, 130688), (1520, 106184), (1664, 96995), (1976, 81680), (2042, 79040), (2080, 77596), (2432, 66365), (2470, 65344), (3040, 53092), (3952, 40840), (4084, 39520), (4160, 38798), (4940, 32672), (5105, 31616), (6080, 26546), (7904, 20420), (8168, 19760), (8320, 19399), (9880, 16336), (10210, 15808), (12160, 13273)]