19876090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{619}}^1$

素因数の和:671

約数の個数: 48

約数和(自身を含む): 40845600

約数和(自身を除く): 20969510

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 169, 190, 247, 338, 494, 619, 845, 1235, 1238, 1690, 2470, 3095, 3211, 6190, 6422, 8047, 11761, 16055, 16094, 23522, 32110, 40235, 58805, 80470, 104611, 117610, 152893, 209222, 305786, 523055, 764465, 1046110, 1528930, 1987609, 3975218, 9938045, 19876090]

約数ペア:

[(1, 19876090), (2, 9938045), (5, 3975218), (10, 1987609), (13, 1528930), (19, 1046110), (26, 764465), (38, 523055), (65, 305786), (95, 209222), (130, 152893), (169, 117610), (190, 104611), (247, 80470), (338, 58805), (494, 40235), (619, 32110), (845, 23522), (1235, 16094), (1238, 16055), (1690, 11761), (2470, 8047), (3095, 6422), (3211, 6190)]