28501780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{313}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 62511120

約数和(自身を除く): 34009340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 157, 290, 313, 314, 580, 626, 628, 785, 1252, 1565, 1570, 3130, 3140, 4553, 6260, 9077, 9106, 18154, 18212, 22765, 36308, 45385, 45530, 49141, 90770, 91060, 98282, 181540, 196564, 245705, 491410, 982820, 1425089, 2850178, 5700356, 7125445, 14250890, 28501780]

約数ペア:

[(1, 28501780), (2, 14250890), (4, 7125445), (5, 5700356), (10, 2850178), (20, 1425089), (29, 982820), (58, 491410), (116, 245705), (145, 196564), (157, 181540), (290, 98282), (313, 91060), (314, 90770), (580, 49141), (626, 45530), (628, 45385), (785, 36308), (1252, 22765), (1565, 18212), (1570, 18154), (3130, 9106), (3140, 9077), (4553, 6260)]