21481590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{223}}^1$

素因数の和:278

約数の個数: 96

約数和(自身を含む): 59028480

約数和(自身を除く): 37546890

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 19, 26, 30, 38, 39, 57, 65, 78, 95, 114, 130, 169, 190, 195, 223, 247, 285, 338, 390, 446, 494, 507, 570, 669, 741, 845, 1014, 1115, 1235, 1338, 1482, 1690, 2230, 2470, 2535, 2899, 3211, 3345, 3705, 4237, 5070, 5798, 6422, 6690, 7410, 8474, 8697, 9633, 12711, 14495, 16055, 17394, 19266, 21185, 25422, 28990, 32110, 37687, 42370, 43485, 48165, 55081, 63555, 75374, 86970, 96330, 110162, 113061, 127110, 165243, 188435, 226122, 275405, 330486, 376870, 550810, 565305, 716053, 826215, 1130610, 1432106, 1652430, 2148159, 3580265, 4296318, 7160530, 10740795, 21481590]

約数ペア:

[(1, 21481590), (2, 10740795), (3, 7160530), (5, 4296318), (6, 3580265), (10, 2148159), (13, 1652430), (15, 1432106), (19, 1130610), (26, 826215), (30, 716053), (38, 565305), (39, 550810), (57, 376870), (65, 330486), (78, 275405), (95, 226122), (114, 188435), (130, 165243), (169, 127110), (190, 113061), (195, 110162), (223, 96330), (247, 86970), (285, 75374), (338, 63555), (390, 55081), (446, 48165), (494, 43485), (507, 42370), (570, 37687), (669, 32110), (741, 28990), (845, 25422), (1014, 21185), (1115, 19266), (1235, 17394), (1338, 16055), (1482, 14495), (1690, 12711), (2230, 9633), (2470, 8697), (2535, 8474), (2899, 7410), (3211, 6690), (3345, 6422), (3705, 5798), (4237, 5070)]