201721185

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16067}}^1$

素因数の和:16115

約数の個数: 40

約数和(自身を含む): 373291776

約数和(自身を除く): 171570591

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 279, 405, 465, 837, 1395, 2511, 4185, 12555, 16067, 48201, 80335, 144603, 241005, 433809, 498077, 723015, 1301427, 1494231, 2169045, 2490385, 4482693, 6507135, 7471155, 13448079, 22413465, 40344237, 67240395, 201721185]

約数ペア:

[(1, 201721185), (3, 67240395), (5, 40344237), (9, 22413465), (15, 13448079), (27, 7471155), (31, 6507135), (45, 4482693), (81, 2490385), (93, 2169045), (135, 1494231), (155, 1301427), (279, 723015), (405, 498077), (465, 433809), (837, 241005), (1395, 144603), (2511, 80335), (4185, 48201), (12555, 16067)]