20217817100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{457}}^1\times {\mathrm{34031}}^1$

素因数の和:34515

約数の個数: 72

約数和(自身を含む): 47352260928

約数和(自身を除く): 27134443828

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 457, 650, 914, 1300, 1828, 2285, 4570, 5941, 9140, 11425, 11882, 22850, 23764, 29705, 34031, 45700, 59410, 68062, 118820, 136124, 148525, 170155, 297050, 340310, 442403, 594100, 680620, 850775, 884806, 1701550, 1769612, 2212015, 3403100, 4424030, 8848060, 11060075, 15552167, 22120150, 31104334, 44240300, 62208668, 77760835, 155521670, 202178171, 311043340, 388804175, 404356342, 777608350, 808712684, 1010890855, 1555216700, 2021781710, 4043563420, 5054454275, 10108908550, 20217817100]

約数ペア:

[(1, 20217817100), (2, 10108908550), (4, 5054454275), (5, 4043563420), (10, 2021781710), (13, 1555216700), (20, 1010890855), (25, 808712684), (26, 777608350), (50, 404356342), (52, 388804175), (65, 311043340), (100, 202178171), (130, 155521670), (260, 77760835), (325, 62208668), (457, 44240300), (650, 31104334), (914, 22120150), (1300, 15552167), (1828, 11060075), (2285, 8848060), (4570, 4424030), (5941, 3403100), (9140, 2212015), (11425, 1769612), (11882, 1701550), (22850, 884806), (23764, 850775), (29705, 680620), (34031, 594100), (45700, 442403), (59410, 340310), (68062, 297050), (118820, 170155), (136124, 148525)]