20449890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{11959}}^1$

素因数の和:11991

約数の個数: 48

約数和(自身を含む): 55972800

約数和(自身を除く): 35522910

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 38, 45, 57, 90, 95, 114, 171, 190, 285, 342, 570, 855, 1710, 11959, 23918, 35877, 59795, 71754, 107631, 119590, 179385, 215262, 227221, 358770, 454442, 538155, 681663, 1076310, 1136105, 1363326, 2044989, 2272210, 3408315, 4089978, 6816630, 10224945, 20449890]

約数ペア:

[(1, 20449890), (2, 10224945), (3, 6816630), (5, 4089978), (6, 3408315), (9, 2272210), (10, 2044989), (15, 1363326), (18, 1136105), (19, 1076310), (30, 681663), (38, 538155), (45, 454442), (57, 358770), (90, 227221), (95, 215262), (114, 179385), (171, 119590), (190, 107631), (285, 71754), (342, 59795), (570, 35877), (855, 23918), (1710, 11959)]