21935264

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{787}}^1$

素因数の和:877

約数の個数: 48

約数和(自身を含む): 47261088

約数和(自身を除く): 25325824

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 67, 104, 134, 208, 268, 416, 536, 787, 871, 1072, 1574, 1742, 2144, 3148, 3484, 6296, 6968, 10231, 12592, 13936, 20462, 25184, 27872, 40924, 52729, 81848, 105458, 163696, 210916, 327392, 421832, 685477, 843664, 1370954, 1687328, 2741908, 5483816, 10967632, 21935264]

約数ペア:

[(1, 21935264), (2, 10967632), (4, 5483816), (8, 2741908), (13, 1687328), (16, 1370954), (26, 843664), (32, 685477), (52, 421832), (67, 327392), (104, 210916), (134, 163696), (208, 105458), (268, 81848), (416, 52729), (536, 40924), (787, 27872), (871, 25184), (1072, 20462), (1574, 13936), (1742, 12592), (2144, 10231), (3148, 6968), (3484, 6296)]