28357780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1553}}^1$

素因数の和:1656

約数の個数: 48

約数和(自身を含む): 65790144

約数和(自身を除く): 37432364

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 83, 110, 166, 220, 332, 415, 830, 913, 1553, 1660, 1826, 3106, 3652, 4565, 6212, 7765, 9130, 15530, 17083, 18260, 31060, 34166, 68332, 85415, 128899, 170830, 257798, 341660, 515596, 644495, 1288990, 1417889, 2577980, 2835778, 5671556, 7089445, 14178890, 28357780]

約数ペア:

[(1, 28357780), (2, 14178890), (4, 7089445), (5, 5671556), (10, 2835778), (11, 2577980), (20, 1417889), (22, 1288990), (44, 644495), (55, 515596), (83, 341660), (110, 257798), (166, 170830), (220, 128899), (332, 85415), (415, 68332), (830, 34166), (913, 31060), (1553, 18260), (1660, 17083), (1826, 15530), (3106, 9130), (3652, 7765), (4565, 6212)]