28135840

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{4289}}^1$

素因数の和:4345

約数の個数: 48

約数和(自身を含む): 68108040

約数和(自身を除く): 39972200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3280, 4289, 6560, 8578, 17156, 21445, 34312, 42890, 68624, 85780, 137248, 171560, 175849, 343120, 351698, 686240, 703396, 879245, 1406792, 1758490, 2813584, 3516980, 5627168, 7033960, 14067920, 28135840]

約数ペア:

[(1, 28135840), (2, 14067920), (4, 7033960), (5, 5627168), (8, 3516980), (10, 2813584), (16, 1758490), (20, 1406792), (32, 879245), (40, 703396), (41, 686240), (80, 351698), (82, 343120), (160, 175849), (164, 171560), (205, 137248), (328, 85780), (410, 68624), (656, 42890), (820, 34312), (1312, 21445), (1640, 17156), (3280, 8578), (4289, 6560)]