18898750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{1163}}^1$

素因数の和:1198

約数の個数: 40

約数和(自身を含む): 38181528

約数和(自身を除く): 19282778

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1163, 1250, 1625, 2326, 3250, 5815, 8125, 11630, 15119, 16250, 29075, 30238, 58150, 75595, 145375, 151190, 290750, 377975, 726875, 755950, 1453750, 1889875, 3779750, 9449375, 18898750]

約数ペア:

[(1, 18898750), (2, 9449375), (5, 3779750), (10, 1889875), (13, 1453750), (25, 755950), (26, 726875), (50, 377975), (65, 290750), (125, 151190), (130, 145375), (250, 75595), (325, 58150), (625, 30238), (650, 29075), (1163, 16250), (1250, 15119), (1625, 11630), (2326, 8125), (3250, 5815)]