18989490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:148

約数の個数: 128

約数和(自身を含む): 53706240

約数和(自身を除く): 34716750

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 23, 26, 29, 30, 39, 46, 58, 65, 69, 73, 78, 87, 115, 130, 138, 145, 146, 174, 195, 219, 230, 290, 299, 345, 365, 377, 390, 435, 438, 598, 667, 690, 730, 754, 870, 897, 949, 1095, 1131, 1334, 1495, 1679, 1794, 1885, 1898, 2001, 2117, 2190, 2262, 2847, 2990, 3335, 3358, 3770, 4002, 4234, 4485, 4745, 5037, 5655, 5694, 6351, 6670, 8395, 8671, 8970, 9490, 10005, 10074, 10585, 11310, 12702, 14235, 16790, 17342, 20010, 21170, 21827, 25185, 26013, 27521, 28470, 31755, 43355, 43654, 48691, 50370, 52026, 55042, 63510, 65481, 82563, 86710, 97382, 109135, 130065, 130962, 137605, 146073, 165126, 218270, 243455, 260130, 275210, 292146, 327405, 412815, 486910, 632983, 654810, 730365, 825630, 1265966, 1460730, 1898949, 3164915, 3797898, 6329830, 9494745, 18989490]

約数ペア:

[(1, 18989490), (2, 9494745), (3, 6329830), (5, 3797898), (6, 3164915), (10, 1898949), (13, 1460730), (15, 1265966), (23, 825630), (26, 730365), (29, 654810), (30, 632983), (39, 486910), (46, 412815), (58, 327405), (65, 292146), (69, 275210), (73, 260130), (78, 243455), (87, 218270), (115, 165126), (130, 146073), (138, 137605), (145, 130962), (146, 130065), (174, 109135), (195, 97382), (219, 86710), (230, 82563), (290, 65481), (299, 63510), (345, 55042), (365, 52026), (377, 50370), (390, 48691), (435, 43654), (438, 43355), (598, 31755), (667, 28470), (690, 27521), (730, 26013), (754, 25185), (870, 21827), (897, 21170), (949, 20010), (1095, 17342), (1131, 16790), (1334, 14235), (1495, 12702), (1679, 11310), (1794, 10585), (1885, 10074), (1898, 10005), (2001, 9490), (2117, 8970), (2190, 8671), (2262, 8395), (2847, 6670), (2990, 6351), (3335, 5694), (3358, 5655), (3770, 5037), (4002, 4745), (4234, 4485)]