1990151618

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{701}}^1\times {\mathrm{821}}^1$

素因数の和:1563

約数の個数: 64

約数和(自身を含む): 3877735680

約数和(自身を除く): 1887584062

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 91, 133, 182, 247, 266, 494, 701, 821, 1402, 1642, 1729, 3458, 4907, 5747, 9113, 9814, 10673, 11494, 13319, 15599, 18226, 21346, 26638, 31198, 63791, 74711, 93233, 109193, 127582, 149422, 173147, 186466, 202787, 218386, 346294, 405574, 575521, 1151042, 1212029, 1419509, 2424058, 2839018, 4028647, 7481773, 8057294, 10934899, 14963546, 21869798, 52372411, 76544293, 104744822, 142153687, 153088586, 284307374, 995075809, 1990151618]

約数ペア:

[(1, 1990151618), (2, 995075809), (7, 284307374), (13, 153088586), (14, 142153687), (19, 104744822), (26, 76544293), (38, 52372411), (91, 21869798), (133, 14963546), (182, 10934899), (247, 8057294), (266, 7481773), (494, 4028647), (701, 2839018), (821, 2424058), (1402, 1419509), (1642, 1212029), (1729, 1151042), (3458, 575521), (4907, 405574), (5747, 346294), (9113, 218386), (9814, 202787), (10673, 186466), (11494, 173147), (13319, 149422), (15599, 127582), (18226, 109193), (21346, 93233), (26638, 74711), (31198, 63791)]