20226440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{401}}^1$

素因数の和:522

約数の個数: 64

約数和(自身を含む): 49638960

約数和(自身を除く): 29412520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 97, 104, 130, 194, 260, 388, 401, 485, 520, 776, 802, 970, 1261, 1604, 1940, 2005, 2522, 3208, 3880, 4010, 5044, 5213, 6305, 8020, 10088, 10426, 12610, 16040, 20852, 25220, 26065, 38897, 41704, 50440, 52130, 77794, 104260, 155588, 194485, 208520, 311176, 388970, 505661, 777940, 1011322, 1555880, 2022644, 2528305, 4045288, 5056610, 10113220, 20226440]

約数ペア:

[(1, 20226440), (2, 10113220), (4, 5056610), (5, 4045288), (8, 2528305), (10, 2022644), (13, 1555880), (20, 1011322), (26, 777940), (40, 505661), (52, 388970), (65, 311176), (97, 208520), (104, 194485), (130, 155588), (194, 104260), (260, 77794), (388, 52130), (401, 50440), (485, 41704), (520, 38897), (776, 26065), (802, 25220), (970, 20852), (1261, 16040), (1604, 12610), (1940, 10426), (2005, 10088), (2522, 8020), (3208, 6305), (3880, 5213), (4010, 5044)]