21219704

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 45532800

約数和(自身を除く): 24313096

約数列:

[1, 2, 4, 8, 11, 22, 44, 59, 61, 67, 88, 118, 122, 134, 236, 244, 268, 472, 488, 536, 649, 671, 737, 1298, 1342, 1474, 2596, 2684, 2948, 3599, 3953, 4087, 5192, 5368, 5896, 7198, 7906, 8174, 14396, 15812, 16348, 28792, 31624, 32696, 39589, 43483, 44957, 79178, 86966, 89914, 158356, 173932, 179828, 241133, 316712, 347864, 359656, 482266, 964532, 1929064, 2652463, 5304926, 10609852, 21219704]

約数ペア:

[(1, 21219704), (2, 10609852), (4, 5304926), (8, 2652463), (11, 1929064), (22, 964532), (44, 482266), (59, 359656), (61, 347864), (67, 316712), (88, 241133), (118, 179828), (122, 173932), (134, 158356), (236, 89914), (244, 86966), (268, 79178), (472, 44957), (488, 43483), (536, 39589), (649, 32696), (671, 31624), (737, 28792), (1298, 16348), (1342, 15812), (1474, 14396), (2596, 8174), (2684, 7906), (2948, 7198), (3599, 5896), (3953, 5368), (4087, 5192)]