28880313

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 51363840

約数和(自身を除く): 22483527

約数列:

[1, 3, 7, 11, 21, 31, 33, 37, 77, 93, 109, 111, 217, 231, 259, 327, 341, 407, 651, 763, 777, 1023, 1147, 1199, 1221, 2289, 2387, 2849, 3379, 3441, 3597, 4033, 7161, 8029, 8393, 8547, 10137, 12099, 12617, 23653, 24087, 25179, 28231, 37169, 37851, 44363, 70959, 84693, 88319, 111507, 125023, 133089, 260183, 264957, 310541, 375069, 780549, 875161, 931623, 1375253, 2625483, 4125759, 9626771, 28880313]

約数ペア:

[(1, 28880313), (3, 9626771), (7, 4125759), (11, 2625483), (21, 1375253), (31, 931623), (33, 875161), (37, 780549), (77, 375069), (93, 310541), (109, 264957), (111, 260183), (217, 133089), (231, 125023), (259, 111507), (327, 88319), (341, 84693), (407, 70959), (651, 44363), (763, 37851), (777, 37169), (1023, 28231), (1147, 25179), (1199, 24087), (1221, 23653), (2289, 12617), (2387, 12099), (2849, 10137), (3379, 8547), (3441, 8393), (3597, 8029), (4033, 7161)]