900919580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{215531}}^1$

素因数の和:215570

約数の個数: 48

約数和(自身を含む): 2172562560

約数和(自身を除く): 1271642980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 215531, 431062, 862124, 1077655, 2155310, 2370841, 4095089, 4310620, 4741682, 8190178, 9483364, 11854205, 16380356, 20475445, 23708410, 40950890, 45045979, 47416820, 81901780, 90091958, 180183916, 225229895, 450459790, 900919580]

約数ペア:

[(1, 900919580), (2, 450459790), (4, 225229895), (5, 180183916), (10, 90091958), (11, 81901780), (19, 47416820), (20, 45045979), (22, 40950890), (38, 23708410), (44, 20475445), (55, 16380356), (76, 11854205), (95, 9483364), (110, 8190178), (190, 4741682), (209, 4310620), (220, 4095089), (380, 2370841), (418, 2155310), (836, 1077655), (1045, 862124), (2090, 431062), (4180, 215531)]