18842778

素因数分解:

$2^1\times 3^2\times {\mathrm{61}}^1\times {\mathrm{131}}^2$

素因数の和:331

約数の個数: 36

約数和(自身を含む): 41814474

約数和(自身を除く): 22971696

約数列:

[1, 2, 3, 6, 9, 18, 61, 122, 131, 183, 262, 366, 393, 549, 786, 1098, 1179, 2358, 7991, 15982, 17161, 23973, 34322, 47946, 51483, 71919, 102966, 143838, 154449, 308898, 1046821, 2093642, 3140463, 6280926, 9421389, 18842778]

約数ペア:

[(1, 18842778), (2, 9421389), (3, 6280926), (6, 3140463), (9, 2093642), (18, 1046821), (61, 308898), (122, 154449), (131, 143838), (183, 102966), (262, 71919), (366, 51483), (393, 47946), (549, 34322), (786, 23973), (1098, 17161), (1179, 15982), (2358, 7991)]