21991024

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:374

約数の個数: 60

約数和(自身を含む): 48255592

約数和(自身を除く): 26264568

約数列:

[1, 2, 4, 8, 11, 16, 22, 37, 44, 74, 88, 121, 148, 176, 242, 296, 307, 407, 484, 592, 614, 814, 968, 1228, 1628, 1936, 2456, 3256, 3377, 4477, 4912, 6512, 6754, 8954, 11359, 13508, 17908, 22718, 27016, 35816, 37147, 45436, 54032, 71632, 74294, 90872, 124949, 148588, 181744, 249898, 297176, 499796, 594352, 999592, 1374439, 1999184, 2748878, 5497756, 10995512, 21991024]

約数ペア:

[(1, 21991024), (2, 10995512), (4, 5497756), (8, 2748878), (11, 1999184), (16, 1374439), (22, 999592), (37, 594352), (44, 499796), (74, 297176), (88, 249898), (121, 181744), (148, 148588), (176, 124949), (242, 90872), (296, 74294), (307, 71632), (407, 54032), (484, 45436), (592, 37147), (614, 35816), (814, 27016), (968, 22718), (1228, 17908), (1628, 13508), (1936, 11359), (2456, 8954), (3256, 6754), (3377, 6512), (4477, 4912)]