181315280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{647}}^1$

素因数の和:804

約数の個数: 80

約数和(自身を含む): 439686144

約数和(自身を除く): 258370864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 113, 124, 155, 226, 248, 310, 452, 496, 565, 620, 647, 904, 1130, 1240, 1294, 1808, 2260, 2480, 2588, 3235, 3503, 4520, 5176, 6470, 7006, 9040, 10352, 12940, 14012, 17515, 20057, 25880, 28024, 35030, 40114, 51760, 56048, 70060, 73111, 80228, 100285, 140120, 146222, 160456, 200570, 280240, 292444, 320912, 365555, 401140, 584888, 731110, 802280, 1169776, 1462220, 1604560, 2266441, 2924440, 4532882, 5848880, 9065764, 11332205, 18131528, 22664410, 36263056, 45328820, 90657640, 181315280]

約数ペア:

[(1, 181315280), (2, 90657640), (4, 45328820), (5, 36263056), (8, 22664410), (10, 18131528), (16, 11332205), (20, 9065764), (31, 5848880), (40, 4532882), (62, 2924440), (80, 2266441), (113, 1604560), (124, 1462220), (155, 1169776), (226, 802280), (248, 731110), (310, 584888), (452, 401140), (496, 365555), (565, 320912), (620, 292444), (647, 280240), (904, 200570), (1130, 160456), (1240, 146222), (1294, 140120), (1808, 100285), (2260, 80228), (2480, 73111), (2588, 70060), (3235, 56048), (3503, 51760), (4520, 40114), (5176, 35030), (6470, 28024), (7006, 25880), (9040, 20057), (10352, 17515), (12940, 14012)]