21463960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:305

約数の個数: 96

約数和(自身を含む): 57620160

約数和(自身を除く): 36156200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 49, 56, 70, 94, 98, 140, 188, 196, 233, 235, 245, 280, 329, 376, 392, 466, 470, 490, 658, 932, 940, 980, 1165, 1316, 1631, 1645, 1864, 1880, 1960, 2303, 2330, 2632, 3262, 3290, 4606, 4660, 6524, 6580, 8155, 9212, 9320, 10951, 11417, 11515, 13048, 13160, 16310, 18424, 21902, 22834, 23030, 32620, 43804, 45668, 46060, 54755, 57085, 65240, 76657, 87608, 91336, 92120, 109510, 114170, 153314, 219020, 228340, 306628, 383285, 438040, 456680, 536599, 613256, 766570, 1073198, 1533140, 2146396, 2682995, 3066280, 4292792, 5365990, 10731980, 21463960]

約数ペア:

[(1, 21463960), (2, 10731980), (4, 5365990), (5, 4292792), (7, 3066280), (8, 2682995), (10, 2146396), (14, 1533140), (20, 1073198), (28, 766570), (35, 613256), (40, 536599), (47, 456680), (49, 438040), (56, 383285), (70, 306628), (94, 228340), (98, 219020), (140, 153314), (188, 114170), (196, 109510), (233, 92120), (235, 91336), (245, 87608), (280, 76657), (329, 65240), (376, 57085), (392, 54755), (466, 46060), (470, 45668), (490, 43804), (658, 32620), (932, 23030), (940, 22834), (980, 21902), (1165, 18424), (1316, 16310), (1631, 13160), (1645, 13048), (1864, 11515), (1880, 11417), (1960, 10951), (2303, 9320), (2330, 9212), (2632, 8155), (3262, 6580), (3290, 6524), (4606, 4660)]