20398455

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^2$

素因数の和:94

約数の個数: 108

約数和(自身を含む): 46469592

約数和(自身を除く): 26071137

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 29, 33, 35, 45, 49, 55, 63, 77, 87, 99, 105, 145, 147, 165, 203, 231, 245, 261, 315, 319, 385, 435, 441, 495, 539, 609, 693, 735, 841, 957, 1015, 1155, 1305, 1421, 1595, 1617, 1827, 2205, 2233, 2523, 2695, 2871, 3045, 3465, 4205, 4263, 4785, 4851, 5887, 6699, 7105, 7569, 8085, 9135, 9251, 11165, 12615, 12789, 14355, 15631, 17661, 20097, 21315, 24255, 27753, 29435, 33495, 37845, 41209, 46255, 46893, 52983, 63945, 64757, 78155, 83259, 88305, 100485, 123627, 138765, 140679, 194271, 206045, 234465, 264915, 323785, 370881, 416295, 453299, 582813, 618135, 703395, 971355, 1359897, 1854405, 2266495, 2914065, 4079691, 6799485, 20398455]

約数ペア:

[(1, 20398455), (3, 6799485), (5, 4079691), (7, 2914065), (9, 2266495), (11, 1854405), (15, 1359897), (21, 971355), (29, 703395), (33, 618135), (35, 582813), (45, 453299), (49, 416295), (55, 370881), (63, 323785), (77, 264915), (87, 234465), (99, 206045), (105, 194271), (145, 140679), (147, 138765), (165, 123627), (203, 100485), (231, 88305), (245, 83259), (261, 78155), (315, 64757), (319, 63945), (385, 52983), (435, 46893), (441, 46255), (495, 41209), (539, 37845), (609, 33495), (693, 29435), (735, 27753), (841, 24255), (957, 21315), (1015, 20097), (1155, 17661), (1305, 15631), (1421, 14355), (1595, 12789), (1617, 12615), (1827, 11165), (2205, 9251), (2233, 9135), (2523, 8085), (2695, 7569), (2871, 7105), (3045, 6699), (3465, 5887), (4205, 4851), (4263, 4785)]