21266864

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1907}}^1$

素因数の和:1973

約数の個数: 40

約数和(自身を含む): 44715888

約数和(自身を除く): 23449024

約数列:

[1, 2, 4, 8, 16, 17, 34, 41, 68, 82, 136, 164, 272, 328, 656, 697, 1394, 1907, 2788, 3814, 5576, 7628, 11152, 15256, 30512, 32419, 64838, 78187, 129676, 156374, 259352, 312748, 518704, 625496, 1250992, 1329179, 2658358, 5316716, 10633432, 21266864]

約数ペア:

[(1, 21266864), (2, 10633432), (4, 5316716), (8, 2658358), (16, 1329179), (17, 1250992), (34, 625496), (41, 518704), (68, 312748), (82, 259352), (136, 156374), (164, 129676), (272, 78187), (328, 64838), (656, 32419), (697, 30512), (1394, 15256), (1907, 11152), (2788, 7628), (3814, 5576)]