21690585

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{1093}}^1$

素因数の和:1124

約数の個数: 60

約数和(自身を含む): 45271908

約数和(自身を除く): 23581323

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 245, 315, 405, 441, 567, 735, 945, 1093, 1323, 2205, 2835, 3279, 3969, 5465, 6615, 7651, 9837, 16395, 19845, 22953, 29511, 38255, 49185, 53557, 68859, 88533, 114765, 147555, 160671, 206577, 267785, 344295, 442665, 482013, 619731, 803355, 1032885, 1446039, 2410065, 3098655, 4338117, 7230195, 21690585]

約数ペア:

[(1, 21690585), (3, 7230195), (5, 4338117), (7, 3098655), (9, 2410065), (15, 1446039), (21, 1032885), (27, 803355), (35, 619731), (45, 482013), (49, 442665), (63, 344295), (81, 267785), (105, 206577), (135, 160671), (147, 147555), (189, 114765), (245, 88533), (315, 68859), (405, 53557), (441, 49185), (567, 38255), (735, 29511), (945, 22953), (1093, 19845), (1323, 16395), (2205, 9837), (2835, 7651), (3279, 6615), (3969, 5465)]