19405360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:470

約数の個数: 80

約数和(自身を含む): 49746816

約数和(自身を除く): 30341456

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 47, 52, 65, 80, 94, 104, 130, 188, 208, 235, 260, 376, 397, 470, 520, 611, 752, 794, 940, 1040, 1222, 1588, 1880, 1985, 2444, 3055, 3176, 3760, 3970, 4888, 5161, 6110, 6352, 7940, 9776, 10322, 12220, 15880, 18659, 20644, 24440, 25805, 31760, 37318, 41288, 48880, 51610, 74636, 82576, 93295, 103220, 149272, 186590, 206440, 242567, 298544, 373180, 412880, 485134, 746360, 970268, 1212835, 1492720, 1940536, 2425670, 3881072, 4851340, 9702680, 19405360]

約数ペア:

[(1, 19405360), (2, 9702680), (4, 4851340), (5, 3881072), (8, 2425670), (10, 1940536), (13, 1492720), (16, 1212835), (20, 970268), (26, 746360), (40, 485134), (47, 412880), (52, 373180), (65, 298544), (80, 242567), (94, 206440), (104, 186590), (130, 149272), (188, 103220), (208, 93295), (235, 82576), (260, 74636), (376, 51610), (397, 48880), (470, 41288), (520, 37318), (611, 31760), (752, 25805), (794, 24440), (940, 20644), (1040, 18659), (1222, 15880), (1588, 12220), (1880, 10322), (1985, 9776), (2444, 7940), (3055, 6352), (3176, 6110), (3760, 5161), (3970, 4888)]