18738790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 40974336

約数和(自身を除く): 22235546

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 103, 113, 115, 161, 206, 226, 230, 322, 515, 565, 721, 791, 805, 1030, 1130, 1442, 1582, 1610, 2369, 2599, 3605, 3955, 4738, 5198, 7210, 7910, 11639, 11845, 12995, 16583, 18193, 23278, 23690, 25990, 33166, 36386, 58195, 81473, 82915, 90965, 116390, 162946, 165830, 181930, 267697, 407365, 535394, 814730, 1338485, 1873879, 2676970, 3747758, 9369395, 18738790]

約数ペア:

[(1, 18738790), (2, 9369395), (5, 3747758), (7, 2676970), (10, 1873879), (14, 1338485), (23, 814730), (35, 535394), (46, 407365), (70, 267697), (103, 181930), (113, 165830), (115, 162946), (161, 116390), (206, 90965), (226, 82915), (230, 81473), (322, 58195), (515, 36386), (565, 33166), (721, 25990), (791, 23690), (805, 23278), (1030, 18193), (1130, 16583), (1442, 12995), (1582, 11845), (1610, 11639), (2369, 7910), (2599, 7210), (3605, 5198), (3955, 4738)]