19549980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{347}}^1$

素因数の和:675

約数の個数: 72

約数和(自身を含む): 59662512

約数和(自身を除く): 40112532

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 313, 347, 626, 694, 939, 1041, 1252, 1388, 1565, 1735, 1878, 2082, 2817, 3123, 3130, 3470, 3756, 4164, 4695, 5205, 5634, 6246, 6260, 6940, 9390, 10410, 11268, 12492, 14085, 15615, 18780, 20820, 28170, 31230, 56340, 62460, 108611, 217222, 325833, 434444, 543055, 651666, 977499, 1086110, 1303332, 1629165, 1954998, 2172220, 3258330, 3909996, 4887495, 6516660, 9774990, 19549980]

約数ペア:

[(1, 19549980), (2, 9774990), (3, 6516660), (4, 4887495), (5, 3909996), (6, 3258330), (9, 2172220), (10, 1954998), (12, 1629165), (15, 1303332), (18, 1086110), (20, 977499), (30, 651666), (36, 543055), (45, 434444), (60, 325833), (90, 217222), (180, 108611), (313, 62460), (347, 56340), (626, 31230), (694, 28170), (939, 20820), (1041, 18780), (1252, 15615), (1388, 14085), (1565, 12492), (1735, 11268), (1878, 10410), (2082, 9390), (2817, 6940), (3123, 6260), (3130, 6246), (3470, 5634), (3756, 5205), (4164, 4695)]