21663174

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 49371840

約数和(自身を除く): 27708666

約数列:

[1, 2, 3, 6, 13, 26, 29, 39, 58, 61, 78, 87, 122, 157, 174, 183, 314, 366, 377, 471, 754, 793, 942, 1131, 1586, 1769, 2041, 2262, 2379, 3538, 4082, 4553, 4758, 5307, 6123, 9106, 9577, 10614, 12246, 13659, 19154, 22997, 27318, 28731, 45994, 57462, 59189, 68991, 118378, 124501, 137982, 177567, 249002, 277733, 355134, 373503, 555466, 747006, 833199, 1666398, 3610529, 7221058, 10831587, 21663174]

約数ペア:

[(1, 21663174), (2, 10831587), (3, 7221058), (6, 3610529), (13, 1666398), (26, 833199), (29, 747006), (39, 555466), (58, 373503), (61, 355134), (78, 277733), (87, 249002), (122, 177567), (157, 137982), (174, 124501), (183, 118378), (314, 68991), (366, 59189), (377, 57462), (471, 45994), (754, 28731), (793, 27318), (942, 22997), (1131, 19154), (1586, 13659), (1769, 12246), (2041, 10614), (2262, 9577), (2379, 9106), (3538, 6123), (4082, 5307), (4553, 4758)]