20278315720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{217859}}^1$

素因数の和:218062

約数の個数: 64

約数和(自身を含む): 49410648000

約数和(自身を除く): 29132332280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 179, 260, 358, 520, 716, 895, 1432, 1790, 2327, 3580, 4654, 7160, 9308, 11635, 18616, 23270, 46540, 93080, 217859, 435718, 871436, 1089295, 1742872, 2178590, 2832167, 4357180, 5664334, 8714360, 11328668, 14160835, 22657336, 28321670, 38996761, 56643340, 77993522, 113286680, 155987044, 194983805, 311974088, 389967610, 506957893, 779935220, 1013915786, 1559870440, 2027831572, 2534789465, 4055663144, 5069578930, 10139157860, 20278315720]

約数ペア:

[(1, 20278315720), (2, 10139157860), (4, 5069578930), (5, 4055663144), (8, 2534789465), (10, 2027831572), (13, 1559870440), (20, 1013915786), (26, 779935220), (40, 506957893), (52, 389967610), (65, 311974088), (104, 194983805), (130, 155987044), (179, 113286680), (260, 77993522), (358, 56643340), (520, 38996761), (716, 28321670), (895, 22657336), (1432, 14160835), (1790, 11328668), (2327, 8714360), (3580, 5664334), (4654, 4357180), (7160, 2832167), (9308, 2178590), (11635, 1742872), (18616, 1089295), (23270, 871436), (46540, 435718), (93080, 217859)]