21440930

素因数分解:

$2^1\times 5^1\times 7^4\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:101

約数の個数: 80

約数和(自身を含む): 48401280

約数和(自身を除く): 26960350

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 47, 49, 70, 94, 95, 98, 133, 190, 235, 245, 266, 329, 343, 470, 490, 658, 665, 686, 893, 931, 1330, 1645, 1715, 1786, 1862, 2303, 2401, 3290, 3430, 4465, 4606, 4655, 4802, 6251, 6517, 8930, 9310, 11515, 12005, 12502, 13034, 16121, 23030, 24010, 31255, 32242, 32585, 43757, 45619, 62510, 65170, 80605, 87514, 91238, 112847, 161210, 218785, 225694, 228095, 306299, 437570, 456190, 564235, 612598, 1128470, 1531495, 2144093, 3062990, 4288186, 10720465, 21440930]

約数ペア:

[(1, 21440930), (2, 10720465), (5, 4288186), (7, 3062990), (10, 2144093), (14, 1531495), (19, 1128470), (35, 612598), (38, 564235), (47, 456190), (49, 437570), (70, 306299), (94, 228095), (95, 225694), (98, 218785), (133, 161210), (190, 112847), (235, 91238), (245, 87514), (266, 80605), (329, 65170), (343, 62510), (470, 45619), (490, 43757), (658, 32585), (665, 32242), (686, 31255), (893, 24010), (931, 23030), (1330, 16121), (1645, 13034), (1715, 12502), (1786, 12005), (1862, 11515), (2303, 9310), (2401, 8930), (3290, 6517), (3430, 6251), (4465, 4802), (4606, 4655)]