19787940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2339}}^1$

素因数の和:2401

約数の個数: 72

約数和(自身を含む): 61326720

約数和(自身を除く): 41538780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 47, 60, 90, 94, 141, 180, 188, 235, 282, 423, 470, 564, 705, 846, 940, 1410, 1692, 2115, 2339, 2820, 4230, 4678, 7017, 8460, 9356, 11695, 14034, 21051, 23390, 28068, 35085, 42102, 46780, 70170, 84204, 105255, 109933, 140340, 210510, 219866, 329799, 421020, 439732, 549665, 659598, 989397, 1099330, 1319196, 1648995, 1978794, 2198660, 3297990, 3957588, 4946985, 6595980, 9893970, 19787940]

約数ペア:

[(1, 19787940), (2, 9893970), (3, 6595980), (4, 4946985), (5, 3957588), (6, 3297990), (9, 2198660), (10, 1978794), (12, 1648995), (15, 1319196), (18, 1099330), (20, 989397), (30, 659598), (36, 549665), (45, 439732), (47, 421020), (60, 329799), (90, 219866), (94, 210510), (141, 140340), (180, 109933), (188, 105255), (235, 84204), (282, 70170), (423, 46780), (470, 42102), (564, 35085), (705, 28068), (846, 23390), (940, 21051), (1410, 14034), (1692, 11695), (2115, 9356), (2339, 8460), (2820, 7017), (4230, 4678)]