18495243

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:153

約数の個数: 64

約数和(自身を含む): 32256000

約数和(自身を除く): 13760757

約数列:

[1, 3, 9, 13, 23, 27, 29, 39, 69, 79, 87, 117, 207, 237, 261, 299, 351, 377, 621, 667, 711, 783, 897, 1027, 1131, 1817, 2001, 2133, 2291, 2691, 3081, 3393, 5451, 6003, 6873, 8073, 8671, 9243, 10179, 16353, 18009, 20619, 23621, 26013, 27729, 29783, 49059, 52693, 61857, 70863, 78039, 89349, 158079, 212589, 234117, 268047, 474237, 637767, 685009, 804141, 1422711, 2055027, 6165081, 18495243]

約数ペア:

[(1, 18495243), (3, 6165081), (9, 2055027), (13, 1422711), (23, 804141), (27, 685009), (29, 637767), (39, 474237), (69, 268047), (79, 234117), (87, 212589), (117, 158079), (207, 89349), (237, 78039), (261, 70863), (299, 61857), (351, 52693), (377, 49059), (621, 29783), (667, 27729), (711, 26013), (783, 23621), (897, 20619), (1027, 18009), (1131, 16353), (1817, 10179), (2001, 9243), (2133, 8671), (2291, 8073), (2691, 6873), (3081, 6003), (3393, 5451)]