18955260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:168

約数の個数: 144

約数和(自身を含む): 61501440

約数和(自身を除く): 42546180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 43, 45, 60, 62, 79, 86, 90, 93, 124, 129, 155, 158, 172, 180, 186, 215, 237, 258, 279, 310, 316, 372, 387, 395, 430, 465, 474, 516, 558, 620, 645, 711, 774, 790, 860, 930, 948, 1116, 1185, 1290, 1333, 1395, 1422, 1548, 1580, 1860, 1935, 2370, 2449, 2580, 2666, 2790, 2844, 3397, 3555, 3870, 3999, 4740, 4898, 5332, 5580, 6665, 6794, 7110, 7347, 7740, 7998, 9796, 10191, 11997, 12245, 13330, 13588, 14220, 14694, 15996, 16985, 19995, 20382, 22041, 23994, 24490, 26660, 29388, 30573, 33970, 36735, 39990, 40764, 44082, 47988, 48980, 50955, 59985, 61146, 67940, 73470, 79980, 88164, 101910, 105307, 110205, 119970, 122292, 146940, 152865, 203820, 210614, 220410, 239940, 305730, 315921, 421228, 440820, 526535, 611460, 631842, 947763, 1053070, 1263684, 1579605, 1895526, 2106140, 3159210, 3791052, 4738815, 6318420, 9477630, 18955260]

約数ペア:

[(1, 18955260), (2, 9477630), (3, 6318420), (4, 4738815), (5, 3791052), (6, 3159210), (9, 2106140), (10, 1895526), (12, 1579605), (15, 1263684), (18, 1053070), (20, 947763), (30, 631842), (31, 611460), (36, 526535), (43, 440820), (45, 421228), (60, 315921), (62, 305730), (79, 239940), (86, 220410), (90, 210614), (93, 203820), (124, 152865), (129, 146940), (155, 122292), (158, 119970), (172, 110205), (180, 105307), (186, 101910), (215, 88164), (237, 79980), (258, 73470), (279, 67940), (310, 61146), (316, 59985), (372, 50955), (387, 48980), (395, 47988), (430, 44082), (465, 40764), (474, 39990), (516, 36735), (558, 33970), (620, 30573), (645, 29388), (711, 26660), (774, 24490), (790, 23994), (860, 22041), (930, 20382), (948, 19995), (1116, 16985), (1185, 15996), (1290, 14694), (1333, 14220), (1395, 13588), (1422, 13330), (1548, 12245), (1580, 11997), (1860, 10191), (1935, 9796), (2370, 7998), (2449, 7740), (2580, 7347), (2666, 7110), (2790, 6794), (2844, 6665), (3397, 5580), (3555, 5332), (3870, 4898), (3999, 4740)]