1289600

素因数分解:

$2^7\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:68

約数の個数: 96

約数和(自身を含む): 3541440

約数和(自身を除く): 2251840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 64, 65, 80, 100, 104, 124, 128, 130, 155, 160, 200, 208, 248, 260, 310, 320, 325, 400, 403, 416, 496, 520, 620, 640, 650, 775, 800, 806, 832, 992, 1040, 1240, 1300, 1550, 1600, 1612, 1664, 1984, 2015, 2080, 2480, 2600, 3100, 3200, 3224, 3968, 4030, 4160, 4960, 5200, 6200, 6448, 8060, 8320, 9920, 10075, 10400, 12400, 12896, 16120, 19840, 20150, 20800, 24800, 25792, 32240, 40300, 41600, 49600, 51584, 64480, 80600, 99200, 128960, 161200, 257920, 322400, 644800, 1289600]

約数ペア:

[(1, 1289600), (2, 644800), (4, 322400), (5, 257920), (8, 161200), (10, 128960), (13, 99200), (16, 80600), (20, 64480), (25, 51584), (26, 49600), (31, 41600), (32, 40300), (40, 32240), (50, 25792), (52, 24800), (62, 20800), (64, 20150), (65, 19840), (80, 16120), (100, 12896), (104, 12400), (124, 10400), (128, 10075), (130, 9920), (155, 8320), (160, 8060), (200, 6448), (208, 6200), (248, 5200), (260, 4960), (310, 4160), (320, 4030), (325, 3968), (400, 3224), (403, 3200), (416, 3100), (496, 2600), (520, 2480), (620, 2080), (640, 2015), (650, 1984), (775, 1664), (800, 1612), (806, 1600), (832, 1550), (992, 1300), (1040, 1240)]