80490420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1871}}^1$

素因数の和:2125

約数の個数: 72

約数和(自身を含む): 245306880

約数和(自身を除く): 164816460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 239, 478, 717, 956, 1195, 1434, 1871, 2151, 2390, 2868, 3585, 3742, 4302, 4780, 5613, 7170, 7484, 8604, 9355, 10755, 11226, 14340, 16839, 18710, 21510, 22452, 28065, 33678, 37420, 43020, 56130, 67356, 84195, 112260, 168390, 336780, 447169, 894338, 1341507, 1788676, 2235845, 2683014, 4024521, 4471690, 5366028, 6707535, 8049042, 8943380, 13415070, 16098084, 20122605, 26830140, 40245210, 80490420]

約数ペア:

[(1, 80490420), (2, 40245210), (3, 26830140), (4, 20122605), (5, 16098084), (6, 13415070), (9, 8943380), (10, 8049042), (12, 6707535), (15, 5366028), (18, 4471690), (20, 4024521), (30, 2683014), (36, 2235845), (45, 1788676), (60, 1341507), (90, 894338), (180, 447169), (239, 336780), (478, 168390), (717, 112260), (956, 84195), (1195, 67356), (1434, 56130), (1871, 43020), (2151, 37420), (2390, 33678), (2868, 28065), (3585, 22452), (3742, 21510), (4302, 18710), (4780, 16839), (5613, 14340), (7170, 11226), (7484, 10755), (8604, 9355)]