20205848

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 43092000

約数和(自身を除く): 22886152

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 59, 74, 89, 104, 118, 148, 178, 236, 296, 356, 472, 481, 712, 767, 962, 1157, 1534, 1924, 2183, 2314, 3068, 3293, 3848, 4366, 4628, 5251, 6136, 6586, 8732, 9256, 10502, 13172, 17464, 21004, 26344, 28379, 42008, 42809, 56758, 68263, 85618, 113516, 136526, 171236, 194287, 227032, 273052, 342472, 388574, 546104, 777148, 1554296, 2525731, 5051462, 10102924, 20205848]

約数ペア:

[(1, 20205848), (2, 10102924), (4, 5051462), (8, 2525731), (13, 1554296), (26, 777148), (37, 546104), (52, 388574), (59, 342472), (74, 273052), (89, 227032), (104, 194287), (118, 171236), (148, 136526), (178, 113516), (236, 85618), (296, 68263), (356, 56758), (472, 42809), (481, 42008), (712, 28379), (767, 26344), (962, 21004), (1157, 17464), (1534, 13172), (1924, 10502), (2183, 9256), (2314, 8732), (3068, 6586), (3293, 6136), (3848, 5251), (4366, 4628)]