21823665

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^2$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 39222144

約数和(自身を除く): 17398479

約数列:

[1, 3, 5, 15, 17, 23, 51, 61, 69, 85, 115, 183, 255, 305, 345, 391, 915, 1037, 1173, 1403, 1955, 3111, 3721, 4209, 5185, 5865, 7015, 11163, 15555, 18605, 21045, 23851, 55815, 63257, 71553, 85583, 119255, 189771, 256749, 316285, 357765, 427915, 948855, 1283745, 1454911, 4364733, 7274555, 21823665]

約数ペア:

[(1, 21823665), (3, 7274555), (5, 4364733), (15, 1454911), (17, 1283745), (23, 948855), (51, 427915), (61, 357765), (69, 316285), (85, 256749), (115, 189771), (183, 119255), (255, 85583), (305, 71553), (345, 63257), (391, 55815), (915, 23851), (1037, 21045), (1173, 18605), (1403, 15555), (1955, 11163), (3111, 7015), (3721, 5865), (4209, 5185)]