18978180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{839}}^1$

素因数の和:893

約数の個数: 96

約数和(自身を含む): 59270400

約数和(自身を除く): 40292220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 29, 30, 39, 52, 58, 60, 65, 78, 87, 116, 130, 145, 156, 174, 195, 260, 290, 348, 377, 390, 435, 580, 754, 780, 839, 870, 1131, 1508, 1678, 1740, 1885, 2262, 2517, 3356, 3770, 4195, 4524, 5034, 5655, 7540, 8390, 10068, 10907, 11310, 12585, 16780, 21814, 22620, 24331, 25170, 32721, 43628, 48662, 50340, 54535, 65442, 72993, 97324, 109070, 121655, 130884, 145986, 163605, 218140, 243310, 291972, 316303, 327210, 364965, 486620, 632606, 654420, 729930, 948909, 1265212, 1459860, 1581515, 1897818, 3163030, 3795636, 4744545, 6326060, 9489090, 18978180]

約数ペア:

[(1, 18978180), (2, 9489090), (3, 6326060), (4, 4744545), (5, 3795636), (6, 3163030), (10, 1897818), (12, 1581515), (13, 1459860), (15, 1265212), (20, 948909), (26, 729930), (29, 654420), (30, 632606), (39, 486620), (52, 364965), (58, 327210), (60, 316303), (65, 291972), (78, 243310), (87, 218140), (116, 163605), (130, 145986), (145, 130884), (156, 121655), (174, 109070), (195, 97324), (260, 72993), (290, 65442), (348, 54535), (377, 50340), (390, 48662), (435, 43628), (580, 32721), (754, 25170), (780, 24331), (839, 22620), (870, 21814), (1131, 16780), (1508, 12585), (1678, 11310), (1740, 10907), (1885, 10068), (2262, 8390), (2517, 7540), (3356, 5655), (3770, 5034), (4195, 4524)]