21921774

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1$

素因数の和:305

約数の個数: 64

約数和(自身を含む): 52531200

約数和(自身を除く): 30609426

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 42, 62, 93, 113, 149, 186, 217, 226, 298, 339, 434, 447, 651, 678, 791, 894, 1043, 1302, 1582, 2086, 2373, 3129, 3503, 4619, 4746, 6258, 7006, 9238, 10509, 13857, 16837, 21018, 24521, 27714, 32333, 33674, 49042, 50511, 64666, 73563, 96999, 101022, 117859, 147126, 193998, 235718, 353577, 521947, 707154, 1043894, 1565841, 3131682, 3653629, 7307258, 10960887, 21921774]

約数ペア:

[(1, 21921774), (2, 10960887), (3, 7307258), (6, 3653629), (7, 3131682), (14, 1565841), (21, 1043894), (31, 707154), (42, 521947), (62, 353577), (93, 235718), (113, 193998), (149, 147126), (186, 117859), (217, 101022), (226, 96999), (298, 73563), (339, 64666), (434, 50511), (447, 49042), (651, 33674), (678, 32333), (791, 27714), (894, 24521), (1043, 21018), (1302, 16837), (1582, 13857), (2086, 10509), (2373, 9238), (3129, 7006), (3503, 6258), (4619, 4746)]