20704980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{383}}^1$

素因数の和:465

約数の個数: 96

約数和(自身を含む): 62705664

約数和(自身を除く): 42000684

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 53, 60, 68, 85, 102, 106, 159, 170, 204, 212, 255, 265, 318, 340, 383, 510, 530, 636, 766, 795, 901, 1020, 1060, 1149, 1532, 1590, 1802, 1915, 2298, 2703, 3180, 3604, 3830, 4505, 4596, 5406, 5745, 6511, 7660, 9010, 10812, 11490, 13022, 13515, 18020, 19533, 20299, 22980, 26044, 27030, 32555, 39066, 40598, 54060, 60897, 65110, 78132, 81196, 97665, 101495, 121794, 130220, 195330, 202990, 243588, 304485, 345083, 390660, 405980, 608970, 690166, 1035249, 1217940, 1380332, 1725415, 2070498, 3450830, 4140996, 5176245, 6901660, 10352490, 20704980]

約数ペア:

[(1, 20704980), (2, 10352490), (3, 6901660), (4, 5176245), (5, 4140996), (6, 3450830), (10, 2070498), (12, 1725415), (15, 1380332), (17, 1217940), (20, 1035249), (30, 690166), (34, 608970), (51, 405980), (53, 390660), (60, 345083), (68, 304485), (85, 243588), (102, 202990), (106, 195330), (159, 130220), (170, 121794), (204, 101495), (212, 97665), (255, 81196), (265, 78132), (318, 65110), (340, 60897), (383, 54060), (510, 40598), (530, 39066), (636, 32555), (766, 27030), (795, 26044), (901, 22980), (1020, 20299), (1060, 19533), (1149, 18020), (1532, 13515), (1590, 13022), (1802, 11490), (1915, 10812), (2298, 9010), (2703, 7660), (3180, 6511), (3604, 5745), (3830, 5406), (4505, 4596)]