399108880

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{6997}}^1$

素因数の和:7064

約数の個数: 80

約数和(自身を含む): 999650304

約数和(自身を除く): 600541424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 40, 46, 62, 80, 92, 115, 124, 155, 184, 230, 248, 310, 368, 460, 496, 620, 713, 920, 1240, 1426, 1840, 2480, 2852, 3565, 5704, 6997, 7130, 11408, 13994, 14260, 27988, 28520, 34985, 55976, 57040, 69970, 111952, 139940, 160931, 216907, 279880, 321862, 433814, 559760, 643724, 804655, 867628, 1084535, 1287448, 1609310, 1735256, 2169070, 2574896, 3218620, 3470512, 4338140, 4988861, 6437240, 8676280, 9977722, 12874480, 17352560, 19955444, 24944305, 39910888, 49888610, 79821776, 99777220, 199554440, 399108880]

約数ペア:

[(1, 399108880), (2, 199554440), (4, 99777220), (5, 79821776), (8, 49888610), (10, 39910888), (16, 24944305), (20, 19955444), (23, 17352560), (31, 12874480), (40, 9977722), (46, 8676280), (62, 6437240), (80, 4988861), (92, 4338140), (115, 3470512), (124, 3218620), (155, 2574896), (184, 2169070), (230, 1735256), (248, 1609310), (310, 1287448), (368, 1084535), (460, 867628), (496, 804655), (620, 643724), (713, 559760), (920, 433814), (1240, 321862), (1426, 279880), (1840, 216907), (2480, 160931), (2852, 139940), (3565, 111952), (5704, 69970), (6997, 57040), (7130, 55976), (11408, 34985), (13994, 28520), (14260, 27988)]