18967515985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{1997}}^1$

素因数の和:2242

約数の個数: 64

約数和(自身を含む): 26757216000

約数和(自身を除く): 7789700015

約数列:

[1, 5, 11, 19, 55, 61, 95, 149, 209, 305, 671, 745, 1045, 1159, 1639, 1997, 2831, 3355, 5795, 8195, 9089, 9985, 12749, 14155, 21967, 31141, 37943, 45445, 63745, 99979, 109835, 121817, 155705, 172691, 189715, 297553, 417373, 499895, 609085, 863455, 1339987, 1487765, 1899601, 2086865, 2314523, 3273083, 5653507, 6699935, 9498005, 11572615, 16365415, 18150733, 25459753, 28267535, 62188577, 90753665, 127298765, 199658063, 310942885, 344863927, 998290315, 1724319635, 3793503197, 18967515985]

約数ペア:

[(1, 18967515985), (5, 3793503197), (11, 1724319635), (19, 998290315), (55, 344863927), (61, 310942885), (95, 199658063), (149, 127298765), (209, 90753665), (305, 62188577), (671, 28267535), (745, 25459753), (1045, 18150733), (1159, 16365415), (1639, 11572615), (1997, 9498005), (2831, 6699935), (3355, 5653507), (5795, 3273083), (8195, 2314523), (9089, 2086865), (9985, 1899601), (12749, 1487765), (14155, 1339987), (21967, 863455), (31141, 609085), (37943, 499895), (45445, 417373), (63745, 297553), (99979, 189715), (109835, 172691), (121817, 155705)]