21320328

素因数分解:

$2^3\times 3^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{461}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 55883520

約数和(自身を除く): 34563192

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 41, 47, 82, 94, 123, 141, 164, 188, 246, 282, 328, 376, 461, 492, 564, 922, 984, 1128, 1383, 1844, 1927, 2766, 3688, 3854, 5532, 5781, 7708, 11064, 11562, 15416, 18901, 21667, 23124, 37802, 43334, 46248, 56703, 65001, 75604, 86668, 113406, 130002, 151208, 173336, 226812, 260004, 453624, 520008, 888347, 1776694, 2665041, 3553388, 5330082, 7106776, 10660164, 21320328]

約数ペア:

[(1, 21320328), (2, 10660164), (3, 7106776), (4, 5330082), (6, 3553388), (8, 2665041), (12, 1776694), (24, 888347), (41, 520008), (47, 453624), (82, 260004), (94, 226812), (123, 173336), (141, 151208), (164, 130002), (188, 113406), (246, 86668), (282, 75604), (328, 65001), (376, 56703), (461, 46248), (492, 43334), (564, 37802), (922, 23124), (984, 21667), (1128, 18901), (1383, 15416), (1844, 11562), (1927, 11064), (2766, 7708), (3688, 5781), (3854, 5532)]