21485048

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 46569600

約数和(自身を除く): 25084552

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 83, 104, 131, 152, 166, 247, 262, 332, 494, 524, 664, 988, 1048, 1079, 1577, 1703, 1976, 2158, 2489, 3154, 3406, 4316, 4978, 6308, 6812, 8632, 9956, 10873, 12616, 13624, 19912, 20501, 21746, 32357, 41002, 43492, 64714, 82004, 86984, 129428, 141349, 164008, 206587, 258856, 282698, 413174, 565396, 826348, 1130792, 1652696, 2685631, 5371262, 10742524, 21485048]

約数ペア:

[(1, 21485048), (2, 10742524), (4, 5371262), (8, 2685631), (13, 1652696), (19, 1130792), (26, 826348), (38, 565396), (52, 413174), (76, 282698), (83, 258856), (104, 206587), (131, 164008), (152, 141349), (166, 129428), (247, 86984), (262, 82004), (332, 64714), (494, 43492), (524, 41002), (664, 32357), (988, 21746), (1048, 20501), (1079, 19912), (1577, 13624), (1703, 12616), (1976, 10873), (2158, 9956), (2489, 8632), (3154, 6812), (3406, 6308), (4316, 4978)]