18895240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1$

素因数の和:239

約数の個数: 128

約数和(自身を含む): 54432000

約数和(自身を除く): 35536760

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 29, 35, 40, 52, 56, 58, 65, 70, 91, 104, 116, 130, 140, 145, 179, 182, 203, 232, 260, 280, 290, 358, 364, 377, 406, 455, 520, 580, 716, 728, 754, 812, 895, 910, 1015, 1160, 1253, 1432, 1508, 1624, 1790, 1820, 1885, 2030, 2327, 2506, 2639, 3016, 3580, 3640, 3770, 4060, 4654, 5012, 5191, 5278, 6265, 7160, 7540, 8120, 9308, 10024, 10382, 10556, 11635, 12530, 13195, 15080, 16289, 18616, 20764, 21112, 23270, 25060, 25955, 26390, 32578, 36337, 41528, 46540, 50120, 51910, 52780, 65156, 67483, 72674, 81445, 93080, 103820, 105560, 130312, 134966, 145348, 162890, 181685, 207640, 269932, 290696, 325780, 337415, 363370, 472381, 539864, 651560, 674830, 726740, 944762, 1349660, 1453480, 1889524, 2361905, 2699320, 3779048, 4723810, 9447620, 18895240]

約数ペア:

[(1, 18895240), (2, 9447620), (4, 4723810), (5, 3779048), (7, 2699320), (8, 2361905), (10, 1889524), (13, 1453480), (14, 1349660), (20, 944762), (26, 726740), (28, 674830), (29, 651560), (35, 539864), (40, 472381), (52, 363370), (56, 337415), (58, 325780), (65, 290696), (70, 269932), (91, 207640), (104, 181685), (116, 162890), (130, 145348), (140, 134966), (145, 130312), (179, 105560), (182, 103820), (203, 93080), (232, 81445), (260, 72674), (280, 67483), (290, 65156), (358, 52780), (364, 51910), (377, 50120), (406, 46540), (455, 41528), (520, 36337), (580, 32578), (716, 26390), (728, 25955), (754, 25060), (812, 23270), (895, 21112), (910, 20764), (1015, 18616), (1160, 16289), (1253, 15080), (1432, 13195), (1508, 12530), (1624, 11635), (1790, 10556), (1820, 10382), (1885, 10024), (2030, 9308), (2327, 8120), (2506, 7540), (2639, 7160), (3016, 6265), (3580, 5278), (3640, 5191), (3770, 5012), (4060, 4654)]