30931940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{439}}^1$

素因数の和:732

約数の個数: 48

約数和(自身を含む): 70371840

約数和(自身を除く): 39439900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 271, 439, 542, 878, 1084, 1355, 1756, 2195, 2710, 3523, 4390, 5420, 5707, 7046, 8780, 11414, 14092, 17615, 22828, 28535, 35230, 57070, 70460, 114140, 118969, 237938, 475876, 594845, 1189690, 1546597, 2379380, 3093194, 6186388, 7732985, 15465970, 30931940]

約数ペア:

[(1, 30931940), (2, 15465970), (4, 7732985), (5, 6186388), (10, 3093194), (13, 2379380), (20, 1546597), (26, 1189690), (52, 594845), (65, 475876), (130, 237938), (260, 118969), (271, 114140), (439, 70460), (542, 57070), (878, 35230), (1084, 28535), (1355, 22828), (1756, 17615), (2195, 14092), (2710, 11414), (3523, 8780), (4390, 7046), (5420, 5707)]