21444780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51059}}^1$

素因数の和:51078

約数の個数: 48

約数和(自身を含む): 68624640

約数和(自身を除く): 47179860

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51059, 102118, 153177, 204236, 255295, 306354, 357413, 510590, 612708, 714826, 765885, 1021180, 1072239, 1429652, 1531770, 1787065, 2144478, 3063540, 3574130, 4288956, 5361195, 7148260, 10722390, 21444780]

約数ペア:

[(1, 21444780), (2, 10722390), (3, 7148260), (4, 5361195), (5, 4288956), (6, 3574130), (7, 3063540), (10, 2144478), (12, 1787065), (14, 1531770), (15, 1429652), (20, 1072239), (21, 1021180), (28, 765885), (30, 714826), (35, 612708), (42, 510590), (60, 357413), (70, 306354), (84, 255295), (105, 204236), (140, 153177), (210, 102118), (420, 51059)]