138804980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{1709}}^1$

素因数の和:1880

約数の個数: 48

約数和(自身を含む): 303367680

約数和(自身を除く): 164562700

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 131, 155, 262, 310, 524, 620, 655, 1310, 1709, 2620, 3418, 4061, 6836, 8122, 8545, 16244, 17090, 20305, 34180, 40610, 52979, 81220, 105958, 211916, 223879, 264895, 447758, 529790, 895516, 1059580, 1119395, 2238790, 4477580, 6940249, 13880498, 27760996, 34701245, 69402490, 138804980]

約数ペア:

[(1, 138804980), (2, 69402490), (4, 34701245), (5, 27760996), (10, 13880498), (20, 6940249), (31, 4477580), (62, 2238790), (124, 1119395), (131, 1059580), (155, 895516), (262, 529790), (310, 447758), (524, 264895), (620, 223879), (655, 211916), (1310, 105958), (1709, 81220), (2620, 52979), (3418, 40610), (4061, 34180), (6836, 20305), (8122, 17090), (8545, 16244)]