21877740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6397}}^1$

素因数の和:6431

約数の個数: 72

約数和(自身を含む): 69866160

約数和(自身を除く): 47988420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 6397, 12794, 19191, 25588, 31985, 38382, 57573, 63970, 76764, 95955, 115146, 121543, 127940, 191910, 230292, 243086, 287865, 364629, 383820, 486172, 575730, 607715, 729258, 1093887, 1151460, 1215430, 1458516, 1823145, 2187774, 2430860, 3646290, 4375548, 5469435, 7292580, 10938870, 21877740]

約数ペア:

[(1, 21877740), (2, 10938870), (3, 7292580), (4, 5469435), (5, 4375548), (6, 3646290), (9, 2430860), (10, 2187774), (12, 1823145), (15, 1458516), (18, 1215430), (19, 1151460), (20, 1093887), (30, 729258), (36, 607715), (38, 575730), (45, 486172), (57, 383820), (60, 364629), (76, 287865), (90, 243086), (95, 230292), (114, 191910), (171, 127940), (180, 121543), (190, 115146), (228, 95955), (285, 76764), (342, 63970), (380, 57573), (570, 38382), (684, 31985), (855, 25588), (1140, 19191), (1710, 12794), (3420, 6397)]