21503708

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^2$

素因数の和:254

約数の個数: 36

約数和(自身を含む): 41541696

約数和(自身を除く): 20037988

約数列:

[1, 2, 4, 17, 31, 34, 62, 68, 101, 124, 202, 404, 527, 1054, 1717, 2108, 3131, 3434, 6262, 6868, 10201, 12524, 20402, 40804, 53227, 106454, 173417, 212908, 316231, 346834, 632462, 693668, 1264924, 5375927, 10751854, 21503708]

約数ペア:

[(1, 21503708), (2, 10751854), (4, 5375927), (17, 1264924), (31, 693668), (34, 632462), (62, 346834), (68, 316231), (101, 212908), (124, 173417), (202, 106454), (404, 53227), (527, 40804), (1054, 20402), (1717, 12524), (2108, 10201), (3131, 6868), (3434, 6262)]