20869420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7297}}^1$

素因数の和:7330

約数の個数: 48

約数和(自身を含む): 51494688

約数和(自身を除く): 30625268

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7297, 14594, 29188, 36485, 72970, 80267, 94861, 145940, 160534, 189722, 321068, 379444, 401335, 474305, 802670, 948610, 1043471, 1605340, 1897220, 2086942, 4173884, 5217355, 10434710, 20869420]

約数ペア:

[(1, 20869420), (2, 10434710), (4, 5217355), (5, 4173884), (10, 2086942), (11, 1897220), (13, 1605340), (20, 1043471), (22, 948610), (26, 802670), (44, 474305), (52, 401335), (55, 379444), (65, 321068), (110, 189722), (130, 160534), (143, 145940), (220, 94861), (260, 80267), (286, 72970), (572, 36485), (715, 29188), (1430, 14594), (2860, 7297)]