81974540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{1213}}^1$

素因数の和:1362

約数の個数: 48

約数和(自身を含む): 179477760

約数和(自身を除く): 97503220

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 109, 124, 155, 218, 310, 436, 545, 620, 1090, 1213, 2180, 2426, 3379, 4852, 6065, 6758, 12130, 13516, 16895, 24260, 33790, 37603, 67580, 75206, 132217, 150412, 188015, 264434, 376030, 528868, 661085, 752060, 1322170, 2644340, 4098727, 8197454, 16394908, 20493635, 40987270, 81974540]

約数ペア:

[(1, 81974540), (2, 40987270), (4, 20493635), (5, 16394908), (10, 8197454), (20, 4098727), (31, 2644340), (62, 1322170), (109, 752060), (124, 661085), (155, 528868), (218, 376030), (310, 264434), (436, 188015), (545, 150412), (620, 132217), (1090, 75206), (1213, 67580), (2180, 37603), (2426, 33790), (3379, 24260), (4852, 16895), (6065, 13516), (6758, 12130)]