215568980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{23899}}^1$

素因数の和:23960

約数の個数: 48

約数和(自身を含む): 505915200

約数和(自身を除く): 290346220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 4510, 9020, 23899, 47798, 95596, 119495, 238990, 262889, 477980, 525778, 979859, 1051556, 1314445, 1959718, 2628890, 3919436, 4899295, 5257780, 9798590, 10778449, 19597180, 21556898, 43113796, 53892245, 107784490, 215568980]

約数ペア:

[(1, 215568980), (2, 107784490), (4, 53892245), (5, 43113796), (10, 21556898), (11, 19597180), (20, 10778449), (22, 9798590), (41, 5257780), (44, 4899295), (55, 3919436), (82, 2628890), (110, 1959718), (164, 1314445), (205, 1051556), (220, 979859), (410, 525778), (451, 477980), (820, 262889), (902, 238990), (1804, 119495), (2255, 95596), (4510, 47798), (9020, 23899)]