20853560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{337}}^1$

素因数の和:385

約数の個数: 128

約数和(自身を含む): 61326720

約数和(自身を除く): 40473160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 17, 20, 26, 28, 34, 35, 40, 52, 56, 65, 68, 70, 85, 91, 104, 119, 130, 136, 140, 170, 182, 221, 238, 260, 280, 337, 340, 364, 442, 455, 476, 520, 595, 674, 680, 728, 884, 910, 952, 1105, 1190, 1348, 1547, 1685, 1768, 1820, 2210, 2359, 2380, 2696, 3094, 3370, 3640, 4381, 4420, 4718, 4760, 5729, 6188, 6740, 7735, 8762, 8840, 9436, 11458, 11795, 12376, 13480, 15470, 17524, 18872, 21905, 22916, 23590, 28645, 30667, 30940, 35048, 40103, 43810, 45832, 47180, 57290, 61334, 61880, 74477, 80206, 87620, 94360, 114580, 122668, 148954, 153335, 160412, 175240, 200515, 229160, 245336, 297908, 306670, 320824, 372385, 401030, 521339, 595816, 613340, 744770, 802060, 1042678, 1226680, 1489540, 1604120, 2085356, 2606695, 2979080, 4170712, 5213390, 10426780, 20853560]

約数ペア:

[(1, 20853560), (2, 10426780), (4, 5213390), (5, 4170712), (7, 2979080), (8, 2606695), (10, 2085356), (13, 1604120), (14, 1489540), (17, 1226680), (20, 1042678), (26, 802060), (28, 744770), (34, 613340), (35, 595816), (40, 521339), (52, 401030), (56, 372385), (65, 320824), (68, 306670), (70, 297908), (85, 245336), (91, 229160), (104, 200515), (119, 175240), (130, 160412), (136, 153335), (140, 148954), (170, 122668), (182, 114580), (221, 94360), (238, 87620), (260, 80206), (280, 74477), (337, 61880), (340, 61334), (364, 57290), (442, 47180), (455, 45832), (476, 43810), (520, 40103), (595, 35048), (674, 30940), (680, 30667), (728, 28645), (884, 23590), (910, 22916), (952, 21905), (1105, 18872), (1190, 17524), (1348, 15470), (1547, 13480), (1685, 12376), (1768, 11795), (1820, 11458), (2210, 9436), (2359, 8840), (2380, 8762), (2696, 7735), (3094, 6740), (3370, 6188), (3640, 5729), (4381, 4760), (4420, 4718)]