28015000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{431}}^1$

素因数の和:470

約数の個数: 80

約数和(自身を含む): 70852320

約数和(自身を除く): 42837320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 431, 500, 520, 625, 650, 862, 1000, 1250, 1300, 1625, 1724, 2155, 2500, 2600, 3250, 3448, 4310, 5000, 5603, 6500, 8125, 8620, 10775, 11206, 13000, 16250, 17240, 21550, 22412, 28015, 32500, 43100, 44824, 53875, 56030, 65000, 86200, 107750, 112060, 140075, 215500, 224120, 269375, 280150, 431000, 538750, 560300, 700375, 1077500, 1120600, 1400750, 2155000, 2801500, 3501875, 5603000, 7003750, 14007500, 28015000]

約数ペア:

[(1, 28015000), (2, 14007500), (4, 7003750), (5, 5603000), (8, 3501875), (10, 2801500), (13, 2155000), (20, 1400750), (25, 1120600), (26, 1077500), (40, 700375), (50, 560300), (52, 538750), (65, 431000), (100, 280150), (104, 269375), (125, 224120), (130, 215500), (200, 140075), (250, 112060), (260, 107750), (325, 86200), (431, 65000), (500, 56030), (520, 53875), (625, 44824), (650, 43100), (862, 32500), (1000, 28015), (1250, 22412), (1300, 21550), (1625, 17240), (1724, 16250), (2155, 13000), (2500, 11206), (2600, 10775), (3250, 8620), (3448, 8125), (4310, 6500), (5000, 5603)]