21028364

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{47}}^1$

素因数の和:135

約数の個数: 72

約数和(自身を含む): 46824960

約数和(自身を除く): 25796596

約数列:

[1, 2, 4, 7, 14, 19, 28, 29, 38, 47, 58, 76, 94, 116, 133, 188, 203, 266, 329, 406, 532, 551, 658, 812, 841, 893, 1102, 1316, 1363, 1682, 1786, 2204, 2726, 3364, 3572, 3857, 5452, 5887, 6251, 7714, 9541, 11774, 12502, 15428, 15979, 19082, 23548, 25004, 25897, 31958, 38164, 39527, 51794, 63916, 79054, 103588, 111853, 158108, 181279, 223706, 276689, 362558, 447412, 553378, 725116, 751013, 1106756, 1502026, 3004052, 5257091, 10514182, 21028364]

約数ペア:

[(1, 21028364), (2, 10514182), (4, 5257091), (7, 3004052), (14, 1502026), (19, 1106756), (28, 751013), (29, 725116), (38, 553378), (47, 447412), (58, 362558), (76, 276689), (94, 223706), (116, 181279), (133, 158108), (188, 111853), (203, 103588), (266, 79054), (329, 63916), (406, 51794), (532, 39527), (551, 38164), (658, 31958), (812, 25897), (841, 25004), (893, 23548), (1102, 19082), (1316, 15979), (1363, 15428), (1682, 12502), (1786, 11774), (2204, 9541), (2726, 7714), (3364, 6251), (3572, 5887), (3857, 5452)]