20199061980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1657}}^1\times {\mathrm{67723}}^1$

素因数の和:69395

約数の個数: 72

約数和(自身を含む): 61308370032

約数和(自身を除く): 41109308052

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1657, 3314, 4971, 6628, 8285, 9942, 14913, 16570, 19884, 24855, 29826, 33140, 49710, 59652, 67723, 74565, 99420, 135446, 149130, 203169, 270892, 298260, 338615, 406338, 609507, 677230, 812676, 1015845, 1219014, 1354460, 2031690, 2438028, 3047535, 4063380, 6095070, 12190140, 112217011, 224434022, 336651033, 448868044, 561085055, 673302066, 1009953099, 1122170110, 1346604132, 1683255165, 2019906198, 2244340220, 3366510330, 4039812396, 5049765495, 6733020660, 10099530990, 20199061980]

約数ペア:

[(1, 20199061980), (2, 10099530990), (3, 6733020660), (4, 5049765495), (5, 4039812396), (6, 3366510330), (9, 2244340220), (10, 2019906198), (12, 1683255165), (15, 1346604132), (18, 1122170110), (20, 1009953099), (30, 673302066), (36, 561085055), (45, 448868044), (60, 336651033), (90, 224434022), (180, 112217011), (1657, 12190140), (3314, 6095070), (4971, 4063380), (6628, 3047535), (8285, 2438028), (9942, 2031690), (14913, 1354460), (16570, 1219014), (19884, 1015845), (24855, 812676), (29826, 677230), (33140, 609507), (49710, 406338), (59652, 338615), (67723, 298260), (74565, 270892), (99420, 203169), (135446, 149130)]