211029980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{9601}}^1$

素因数の和:9774

約数の個数: 48

約数和(自身を含む): 509750976

約数和(自身を除く): 298720996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1570, 2198, 3140, 4396, 5495, 9601, 10990, 19202, 21980, 38404, 48005, 67207, 96010, 134414, 192020, 268828, 336035, 672070, 1344140, 1507357, 3014714, 6029428, 7536785, 10551499, 15073570, 21102998, 30147140, 42205996, 52757495, 105514990, 211029980]

約数ペア:

[(1, 211029980), (2, 105514990), (4, 52757495), (5, 42205996), (7, 30147140), (10, 21102998), (14, 15073570), (20, 10551499), (28, 7536785), (35, 6029428), (70, 3014714), (140, 1507357), (157, 1344140), (314, 672070), (628, 336035), (785, 268828), (1099, 192020), (1570, 134414), (2198, 96010), (3140, 67207), (4396, 48005), (5495, 38404), (9601, 21980), (10990, 19202)]