21038892

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{73}}^2$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 58093056

約数和(自身を除く): 37054164

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 47, 73, 84, 94, 141, 146, 188, 219, 282, 292, 329, 438, 511, 564, 658, 876, 987, 1022, 1316, 1533, 1974, 2044, 3066, 3431, 3948, 5329, 6132, 6862, 10293, 10658, 13724, 15987, 20586, 21316, 24017, 31974, 37303, 41172, 48034, 63948, 72051, 74606, 96068, 111909, 144102, 149212, 223818, 250463, 288204, 447636, 500926, 751389, 1001852, 1502778, 1753241, 3005556, 3506482, 5259723, 7012964, 10519446, 21038892]

約数ペア:

[(1, 21038892), (2, 10519446), (3, 7012964), (4, 5259723), (6, 3506482), (7, 3005556), (12, 1753241), (14, 1502778), (21, 1001852), (28, 751389), (42, 500926), (47, 447636), (73, 288204), (84, 250463), (94, 223818), (141, 149212), (146, 144102), (188, 111909), (219, 96068), (282, 74606), (292, 72051), (329, 63948), (438, 48034), (511, 41172), (564, 37303), (658, 31974), (876, 24017), (987, 21316), (1022, 20586), (1316, 15987), (1533, 13724), (1974, 10658), (2044, 10293), (3066, 6862), (3431, 6132), (3948, 5329)]