81265600

素因数分解:

$2^6\times 5^2\times {\mathrm{13}}^1\times {\mathrm{3907}}^1$

素因数の和:3942

約数の個数: 84

約数和(自身を含む): 215401144

約数和(自身を除く): 134135544

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 130, 160, 200, 208, 260, 320, 325, 400, 416, 520, 650, 800, 832, 1040, 1300, 1600, 2080, 2600, 3907, 4160, 5200, 7814, 10400, 15628, 19535, 20800, 31256, 39070, 50791, 62512, 78140, 97675, 101582, 125024, 156280, 195350, 203164, 250048, 253955, 312560, 390700, 406328, 507910, 625120, 781400, 812656, 1015820, 1250240, 1269775, 1562800, 1625312, 2031640, 2539550, 3125600, 3250624, 4063280, 5079100, 6251200, 8126560, 10158200, 16253120, 20316400, 40632800, 81265600]

約数ペア:

[(1, 81265600), (2, 40632800), (4, 20316400), (5, 16253120), (8, 10158200), (10, 8126560), (13, 6251200), (16, 5079100), (20, 4063280), (25, 3250624), (26, 3125600), (32, 2539550), (40, 2031640), (50, 1625312), (52, 1562800), (64, 1269775), (65, 1250240), (80, 1015820), (100, 812656), (104, 781400), (130, 625120), (160, 507910), (200, 406328), (208, 390700), (260, 312560), (320, 253955), (325, 250048), (400, 203164), (416, 195350), (520, 156280), (650, 125024), (800, 101582), (832, 97675), (1040, 78140), (1300, 62512), (1600, 50791), (2080, 39070), (2600, 31256), (3907, 20800), (4160, 19535), (5200, 15628), (7814, 10400)]