20972770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1213}}^1$

素因数の和:1259

約数の個数: 64

約数和(自身を含む): 48948480

約数和(自身を除く): 27975710

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 26, 35, 38, 65, 70, 91, 95, 130, 133, 182, 190, 247, 266, 455, 494, 665, 910, 1213, 1235, 1330, 1729, 2426, 2470, 3458, 6065, 8491, 8645, 12130, 15769, 16982, 17290, 23047, 31538, 42455, 46094, 78845, 84910, 110383, 115235, 157690, 161329, 220766, 230470, 299611, 322658, 551915, 599222, 806645, 1103830, 1498055, 1613290, 2097277, 2996110, 4194554, 10486385, 20972770]

約数ペア:

[(1, 20972770), (2, 10486385), (5, 4194554), (7, 2996110), (10, 2097277), (13, 1613290), (14, 1498055), (19, 1103830), (26, 806645), (35, 599222), (38, 551915), (65, 322658), (70, 299611), (91, 230470), (95, 220766), (130, 161329), (133, 157690), (182, 115235), (190, 110383), (247, 84910), (266, 78845), (455, 46094), (494, 42455), (665, 31538), (910, 23047), (1213, 17290), (1235, 16982), (1330, 15769), (1729, 12130), (2426, 8645), (2470, 8491), (3458, 6065)]