18420597

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 30466800

約数和(自身を除く): 12046203

約数列:

[1, 3, 9, 13, 29, 39, 61, 87, 89, 117, 183, 261, 267, 377, 549, 793, 801, 1131, 1157, 1769, 2379, 2581, 3393, 3471, 5307, 5429, 7137, 7743, 10413, 15921, 16287, 22997, 23229, 33553, 48861, 68991, 70577, 100659, 157441, 206973, 211731, 301977, 472323, 635193, 1416969, 2046733, 6140199, 18420597]

約数ペア:

[(1, 18420597), (3, 6140199), (9, 2046733), (13, 1416969), (29, 635193), (39, 472323), (61, 301977), (87, 211731), (89, 206973), (117, 157441), (183, 100659), (261, 70577), (267, 68991), (377, 48861), (549, 33553), (793, 23229), (801, 22997), (1131, 16287), (1157, 15921), (1769, 10413), (2379, 7743), (2581, 7137), (3393, 5429), (3471, 5307)]