21430968

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{461}}^1$

素因数の和:632

約数の個数: 64

約数和(自身を含む): 58212000

約数和(自身を除く): 36781032

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 149, 156, 298, 312, 447, 461, 596, 894, 922, 1192, 1383, 1788, 1844, 1937, 2766, 3576, 3688, 3874, 5532, 5811, 5993, 7748, 11064, 11622, 11986, 15496, 17979, 23244, 23972, 35958, 46488, 47944, 68689, 71916, 137378, 143832, 206067, 274756, 412134, 549512, 824268, 892957, 1648536, 1785914, 2678871, 3571828, 5357742, 7143656, 10715484, 21430968]

約数ペア:

[(1, 21430968), (2, 10715484), (3, 7143656), (4, 5357742), (6, 3571828), (8, 2678871), (12, 1785914), (13, 1648536), (24, 892957), (26, 824268), (39, 549512), (52, 412134), (78, 274756), (104, 206067), (149, 143832), (156, 137378), (298, 71916), (312, 68689), (447, 47944), (461, 46488), (596, 35958), (894, 23972), (922, 23244), (1192, 17979), (1383, 15496), (1788, 11986), (1844, 11622), (1937, 11064), (2766, 7748), (3576, 5993), (3688, 5811), (3874, 5532)]