20748688

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{461}}^1$

素因数の和:595

約数の個数: 40

約数和(自身を含む): 42106680

約数和(自身を除く): 21357992

約数列:

[1, 2, 4, 8, 16, 29, 58, 97, 116, 194, 232, 388, 461, 464, 776, 922, 1552, 1844, 2813, 3688, 5626, 7376, 11252, 13369, 22504, 26738, 44717, 45008, 53476, 89434, 106952, 178868, 213904, 357736, 715472, 1296793, 2593586, 5187172, 10374344, 20748688]

約数ペア:

[(1, 20748688), (2, 10374344), (4, 5187172), (8, 2593586), (16, 1296793), (29, 715472), (58, 357736), (97, 213904), (116, 178868), (194, 106952), (232, 89434), (388, 53476), (461, 45008), (464, 44717), (776, 26738), (922, 22504), (1552, 13369), (1844, 11252), (2813, 7376), (3688, 5626)]