20953647

素因数分解:

$3^7\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1$

素因数の和:112

約数の個数: 64

約数和(自身を含む): 37470720

約数和(自身を除く): 16517073

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 67, 81, 99, 117, 143, 201, 243, 297, 351, 429, 603, 729, 737, 871, 891, 1053, 1287, 1809, 2187, 2211, 2613, 2673, 3159, 3861, 5427, 6633, 7839, 8019, 9477, 9581, 11583, 16281, 19899, 23517, 24057, 28431, 28743, 34749, 48843, 59697, 70551, 86229, 104247, 146529, 179091, 211653, 258687, 312741, 537273, 634959, 776061, 1611819, 1904877, 2328183, 6984549, 20953647]

約数ペア:

[(1, 20953647), (3, 6984549), (9, 2328183), (11, 1904877), (13, 1611819), (27, 776061), (33, 634959), (39, 537273), (67, 312741), (81, 258687), (99, 211653), (117, 179091), (143, 146529), (201, 104247), (243, 86229), (297, 70551), (351, 59697), (429, 48843), (603, 34749), (729, 28743), (737, 28431), (871, 24057), (891, 23517), (1053, 19899), (1287, 16281), (1809, 11583), (2187, 9581), (2211, 9477), (2613, 8019), (2673, 7839), (3159, 6633), (3861, 5427)]