645979004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1\times {\mathrm{947}}^1$

素因数の和:1418

約数の個数: 48

約数和(自身を含む): 1270926720

約数和(自身を除く): 624947716

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 419, 814, 838, 947, 1628, 1676, 1894, 3788, 4609, 9218, 10417, 15503, 18436, 20834, 31006, 35039, 41668, 62012, 70078, 140156, 170533, 341066, 385429, 396793, 682132, 770858, 793586, 1541716, 1587172, 4364723, 8729446, 14681341, 17458892, 29362682, 58725364, 161494751, 322989502, 645979004]

約数ペア:

[(1, 645979004), (2, 322989502), (4, 161494751), (11, 58725364), (22, 29362682), (37, 17458892), (44, 14681341), (74, 8729446), (148, 4364723), (407, 1587172), (419, 1541716), (814, 793586), (838, 770858), (947, 682132), (1628, 396793), (1676, 385429), (1894, 341066), (3788, 170533), (4609, 140156), (9218, 70078), (10417, 62012), (15503, 41668), (18436, 35039), (20834, 31006)]