20016975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1277}}^1$

素因数の和:1320

約数の個数: 48

約数和(自身を含む): 38033280

約数和(自身を除く): 18016305

約数列:

[1, 3, 5, 11, 15, 19, 25, 33, 55, 57, 75, 95, 165, 209, 275, 285, 475, 627, 825, 1045, 1277, 1425, 3135, 3831, 5225, 6385, 14047, 15675, 19155, 24263, 31925, 42141, 70235, 72789, 95775, 121315, 210705, 266893, 351175, 363945, 606575, 800679, 1053525, 1334465, 1819725, 4003395, 6672325, 20016975]

約数ペア:

[(1, 20016975), (3, 6672325), (5, 4003395), (11, 1819725), (15, 1334465), (19, 1053525), (25, 800679), (33, 606575), (55, 363945), (57, 351175), (75, 266893), (95, 210705), (165, 121315), (209, 95775), (275, 72789), (285, 70235), (475, 42141), (627, 31925), (825, 24263), (1045, 19155), (1277, 15675), (1425, 14047), (3135, 6385), (3831, 5225)]