21087960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{3739}}^1$

素因数の和:3800

約数の個数: 64

約数和(自身を含む): 64627200

約数和(自身を除く): 43539240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 47, 60, 94, 120, 141, 188, 235, 282, 376, 470, 564, 705, 940, 1128, 1410, 1880, 2820, 3739, 5640, 7478, 11217, 14956, 18695, 22434, 29912, 37390, 44868, 56085, 74780, 89736, 112170, 149560, 175733, 224340, 351466, 448680, 527199, 702932, 878665, 1054398, 1405864, 1757330, 2108796, 2635995, 3514660, 4217592, 5271990, 7029320, 10543980, 21087960]

約数ペア:

[(1, 21087960), (2, 10543980), (3, 7029320), (4, 5271990), (5, 4217592), (6, 3514660), (8, 2635995), (10, 2108796), (12, 1757330), (15, 1405864), (20, 1054398), (24, 878665), (30, 702932), (40, 527199), (47, 448680), (60, 351466), (94, 224340), (120, 175733), (141, 149560), (188, 112170), (235, 89736), (282, 74780), (376, 56085), (470, 44868), (564, 37390), (705, 29912), (940, 22434), (1128, 18695), (1410, 14956), (1880, 11217), (2820, 7478), (3739, 5640)]