20484945

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{97}}^1$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 40773096

約数和(自身を除く): 20288151

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 97, 117, 171, 195, 247, 285, 291, 361, 485, 585, 741, 855, 873, 1083, 1235, 1261, 1455, 1805, 1843, 2223, 3249, 3705, 3783, 4365, 4693, 5415, 5529, 6305, 9215, 11115, 11349, 14079, 16245, 16587, 18915, 23465, 23959, 27645, 35017, 42237, 56745, 70395, 71877, 82935, 105051, 119795, 175085, 211185, 215631, 315153, 359385, 455221, 525255, 1078155, 1365663, 1575765, 2276105, 4096989, 6828315, 20484945]

約数ペア:

[(1, 20484945), (3, 6828315), (5, 4096989), (9, 2276105), (13, 1575765), (15, 1365663), (19, 1078155), (39, 525255), (45, 455221), (57, 359385), (65, 315153), (95, 215631), (97, 211185), (117, 175085), (171, 119795), (195, 105051), (247, 82935), (285, 71877), (291, 70395), (361, 56745), (485, 42237), (585, 35017), (741, 27645), (855, 23959), (873, 23465), (1083, 18915), (1235, 16587), (1261, 16245), (1455, 14079), (1805, 11349), (1843, 11115), (2223, 9215), (3249, 6305), (3705, 5529), (3783, 5415), (4365, 4693)]