20198761640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1\times {\mathrm{23059}}^1$

素因数の和:23490

約数の個数: 64

約数和(自身を含む): 46322928000

約数和(自身を除く): 26124166360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 359, 488, 610, 718, 1220, 1436, 1795, 2440, 2872, 3590, 7180, 14360, 21899, 23059, 43798, 46118, 87596, 92236, 109495, 115295, 175192, 184472, 218990, 230590, 437980, 461180, 875960, 922360, 1406599, 2813198, 5626396, 7032995, 8278181, 11252792, 14065990, 16556362, 28131980, 33112724, 41390905, 56263960, 66225448, 82781810, 165563620, 331127240, 504969041, 1009938082, 2019876164, 2524845205, 4039752328, 5049690410, 10099380820, 20198761640]

約数ペア:

[(1, 20198761640), (2, 10099380820), (4, 5049690410), (5, 4039752328), (8, 2524845205), (10, 2019876164), (20, 1009938082), (40, 504969041), (61, 331127240), (122, 165563620), (244, 82781810), (305, 66225448), (359, 56263960), (488, 41390905), (610, 33112724), (718, 28131980), (1220, 16556362), (1436, 14065990), (1795, 11252792), (2440, 8278181), (2872, 7032995), (3590, 5626396), (7180, 2813198), (14360, 1406599), (21899, 922360), (23059, 875960), (43798, 461180), (46118, 437980), (87596, 230590), (92236, 218990), (109495, 184472), (115295, 175192)]