28419820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{523}}^1$

素因数の和:575

約数の個数: 96

約数和(自身を含む): 73946880

約数和(自身を除く): 45527060

約数列:

[1, 2, 4, 5, 10, 11, 13, 19, 20, 22, 26, 38, 44, 52, 55, 65, 76, 95, 110, 130, 143, 190, 209, 220, 247, 260, 286, 380, 418, 494, 523, 572, 715, 836, 988, 1045, 1046, 1235, 1430, 2090, 2092, 2470, 2615, 2717, 2860, 4180, 4940, 5230, 5434, 5753, 6799, 9937, 10460, 10868, 11506, 13585, 13598, 19874, 23012, 27170, 27196, 28765, 33995, 39748, 49685, 54340, 57530, 67990, 74789, 99370, 109307, 115060, 129181, 135980, 149578, 198740, 218614, 258362, 299156, 373945, 437228, 516724, 546535, 645905, 747890, 1093070, 1291810, 1420991, 1495780, 2186140, 2583620, 2841982, 5683964, 7104955, 14209910, 28419820]

約数ペア:

[(1, 28419820), (2, 14209910), (4, 7104955), (5, 5683964), (10, 2841982), (11, 2583620), (13, 2186140), (19, 1495780), (20, 1420991), (22, 1291810), (26, 1093070), (38, 747890), (44, 645905), (52, 546535), (55, 516724), (65, 437228), (76, 373945), (95, 299156), (110, 258362), (130, 218614), (143, 198740), (190, 149578), (209, 135980), (220, 129181), (247, 115060), (260, 109307), (286, 99370), (380, 74789), (418, 67990), (494, 57530), (523, 54340), (572, 49685), (715, 39748), (836, 33995), (988, 28765), (1045, 27196), (1046, 27170), (1235, 23012), (1430, 19874), (2090, 13598), (2092, 13585), (2470, 11506), (2615, 10868), (2717, 10460), (2860, 9937), (4180, 6799), (4940, 5753), (5230, 5434)]