20265530

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 41430528

約数和(自身を除く): 21164998

約数列:

[1, 2, 5, 10, 17, 23, 34, 46, 71, 73, 85, 115, 142, 146, 170, 230, 355, 365, 391, 710, 730, 782, 1207, 1241, 1633, 1679, 1955, 2414, 2482, 3266, 3358, 3910, 5183, 6035, 6205, 8165, 8395, 10366, 12070, 12410, 16330, 16790, 25915, 27761, 28543, 51830, 55522, 57086, 88111, 119209, 138805, 142715, 176222, 238418, 277610, 285430, 440555, 596045, 881110, 1192090, 2026553, 4053106, 10132765, 20265530]

約数ペア:

[(1, 20265530), (2, 10132765), (5, 4053106), (10, 2026553), (17, 1192090), (23, 881110), (34, 596045), (46, 440555), (71, 285430), (73, 277610), (85, 238418), (115, 176222), (142, 142715), (146, 138805), (170, 119209), (230, 88111), (355, 57086), (365, 55522), (391, 51830), (710, 28543), (730, 27761), (782, 25915), (1207, 16790), (1241, 16330), (1633, 12410), (1679, 12070), (1955, 10366), (2414, 8395), (2482, 8165), (3266, 6205), (3358, 6035), (3910, 5183)]