21110128

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:282

約数の個数: 60

約数和(自身を含む): 45701688

約数和(自身を除く): 24591560

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 104, 148, 169, 208, 211, 296, 338, 422, 481, 592, 676, 844, 962, 1352, 1688, 1924, 2704, 2743, 3376, 3848, 5486, 6253, 7696, 7807, 10972, 12506, 15614, 21944, 25012, 31228, 35659, 43888, 50024, 62456, 71318, 100048, 101491, 124912, 142636, 202982, 285272, 405964, 570544, 811928, 1319383, 1623856, 2638766, 5277532, 10555064, 21110128]

約数ペア:

[(1, 21110128), (2, 10555064), (4, 5277532), (8, 2638766), (13, 1623856), (16, 1319383), (26, 811928), (37, 570544), (52, 405964), (74, 285272), (104, 202982), (148, 142636), (169, 124912), (208, 101491), (211, 100048), (296, 71318), (338, 62456), (422, 50024), (481, 43888), (592, 35659), (676, 31228), (844, 25012), (962, 21944), (1352, 15614), (1688, 12506), (1924, 10972), (2704, 7807), (2743, 7696), (3376, 6253), (3848, 5486)]