21316572

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{571}}^1$

素因数の和:659

約数の個数: 72

約数和(自身を含む): 58090032

約数和(自身を除く): 36773460

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 61, 68, 102, 122, 153, 183, 204, 244, 306, 366, 549, 571, 612, 732, 1037, 1098, 1142, 1713, 2074, 2196, 2284, 3111, 3426, 4148, 5139, 6222, 6852, 9333, 9707, 10278, 12444, 18666, 19414, 20556, 29121, 34831, 37332, 38828, 58242, 69662, 87363, 104493, 116484, 139324, 174726, 208986, 313479, 349452, 417972, 592127, 626958, 1184254, 1253916, 1776381, 2368508, 3552762, 5329143, 7105524, 10658286, 21316572]

約数ペア:

[(1, 21316572), (2, 10658286), (3, 7105524), (4, 5329143), (6, 3552762), (9, 2368508), (12, 1776381), (17, 1253916), (18, 1184254), (34, 626958), (36, 592127), (51, 417972), (61, 349452), (68, 313479), (102, 208986), (122, 174726), (153, 139324), (183, 116484), (204, 104493), (244, 87363), (306, 69662), (366, 58242), (549, 38828), (571, 37332), (612, 34831), (732, 29121), (1037, 20556), (1098, 19414), (1142, 18666), (1713, 12444), (2074, 10278), (2196, 9707), (2284, 9333), (3111, 6852), (3426, 6222), (4148, 5139)]