20872072

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{2069}}^1$

素因数の和:2185

約数の個数: 32

約数和(自身を含む): 42600600

約数和(自身を除く): 21728528

約数列:

[1, 2, 4, 8, 13, 26, 52, 97, 104, 194, 388, 776, 1261, 2069, 2522, 4138, 5044, 8276, 10088, 16552, 26897, 53794, 107588, 200693, 215176, 401386, 802772, 1605544, 2609009, 5218018, 10436036, 20872072]

約数ペア:

[(1, 20872072), (2, 10436036), (4, 5218018), (8, 2609009), (13, 1605544), (26, 802772), (52, 401386), (97, 215176), (104, 200693), (194, 107588), (388, 53794), (776, 26897), (1261, 16552), (2069, 10088), (2522, 8276), (4138, 5044)]