19851920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1327}}^1$

素因数の和:1368

約数の個数: 80

約数和(自身を含む): 53353728

約数和(自身を除く): 33501808

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 170, 176, 187, 220, 272, 340, 374, 440, 680, 748, 880, 935, 1327, 1360, 1496, 1870, 2654, 2992, 3740, 5308, 6635, 7480, 10616, 13270, 14597, 14960, 21232, 22559, 26540, 29194, 45118, 53080, 58388, 72985, 90236, 106160, 112795, 116776, 145970, 180472, 225590, 233552, 248149, 291940, 360944, 451180, 496298, 583880, 902360, 992596, 1167760, 1240745, 1804720, 1985192, 2481490, 3970384, 4962980, 9925960, 19851920]

約数ペア:

[(1, 19851920), (2, 9925960), (4, 4962980), (5, 3970384), (8, 2481490), (10, 1985192), (11, 1804720), (16, 1240745), (17, 1167760), (20, 992596), (22, 902360), (34, 583880), (40, 496298), (44, 451180), (55, 360944), (68, 291940), (80, 248149), (85, 233552), (88, 225590), (110, 180472), (136, 145970), (170, 116776), (176, 112795), (187, 106160), (220, 90236), (272, 72985), (340, 58388), (374, 53080), (440, 45118), (680, 29194), (748, 26540), (880, 22559), (935, 21232), (1327, 14960), (1360, 14597), (1496, 13270), (1870, 10616), (2654, 7480), (2992, 6635), (3740, 5308)]