21856554020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1\times {\mathrm{7639}}^1$

素因数の和:7953

約数の個数: 96

約数和(自身を含む): 53230141440

約数和(自身を除く): 31373587420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 191, 214, 382, 428, 535, 749, 764, 955, 1070, 1337, 1498, 1910, 2140, 2674, 2996, 3745, 3820, 5348, 6685, 7490, 7639, 13370, 14980, 15278, 20437, 26740, 30556, 38195, 40874, 53473, 76390, 81748, 102185, 106946, 143059, 152780, 204370, 213892, 267365, 286118, 408740, 534730, 572236, 715295, 817373, 1069460, 1430590, 1459049, 1634746, 2861180, 2918098, 3269492, 4086865, 5721611, 5836196, 7295245, 8173730, 10213343, 11443222, 14590490, 16347460, 20426686, 22886444, 28608055, 29180980, 40853372, 51066715, 57216110, 102133430, 114432220, 156118243, 204266860, 312236486, 624472972, 780591215, 1092827701, 1561182430, 2185655402, 3122364860, 4371310804, 5464138505, 10928277010, 21856554020]

約数ペア:

[(1, 21856554020), (2, 10928277010), (4, 5464138505), (5, 4371310804), (7, 3122364860), (10, 2185655402), (14, 1561182430), (20, 1092827701), (28, 780591215), (35, 624472972), (70, 312236486), (107, 204266860), (140, 156118243), (191, 114432220), (214, 102133430), (382, 57216110), (428, 51066715), (535, 40853372), (749, 29180980), (764, 28608055), (955, 22886444), (1070, 20426686), (1337, 16347460), (1498, 14590490), (1910, 11443222), (2140, 10213343), (2674, 8173730), (2996, 7295245), (3745, 5836196), (3820, 5721611), (5348, 4086865), (6685, 3269492), (7490, 2918098), (7639, 2861180), (13370, 1634746), (14980, 1459049), (15278, 1430590), (20437, 1069460), (26740, 817373), (30556, 715295), (38195, 572236), (40874, 534730), (53473, 408740), (76390, 286118), (81748, 267365), (102185, 213892), (106946, 204370), (143059, 152780)]