20363805

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{653}}^1$

素因数の和:688

約数の個数: 80

約数和(自身を含む): 45581184

約数和(自身を除く): 25217379

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 55, 63, 77, 81, 99, 105, 135, 165, 189, 231, 297, 315, 385, 405, 495, 567, 653, 693, 891, 945, 1155, 1485, 1959, 2079, 2835, 3265, 3465, 4455, 4571, 5877, 6237, 7183, 9795, 10395, 13713, 17631, 21549, 22855, 29385, 31185, 35915, 41139, 50281, 52893, 64647, 68565, 88155, 107745, 123417, 150843, 193941, 205695, 251405, 264465, 323235, 370251, 452529, 581823, 617085, 754215, 969705, 1357587, 1851255, 2262645, 2909115, 4072761, 6787935, 20363805]

約数ペア:

[(1, 20363805), (3, 6787935), (5, 4072761), (7, 2909115), (9, 2262645), (11, 1851255), (15, 1357587), (21, 969705), (27, 754215), (33, 617085), (35, 581823), (45, 452529), (55, 370251), (63, 323235), (77, 264465), (81, 251405), (99, 205695), (105, 193941), (135, 150843), (165, 123417), (189, 107745), (231, 88155), (297, 68565), (315, 64647), (385, 52893), (405, 50281), (495, 41139), (567, 35915), (653, 31185), (693, 29385), (891, 22855), (945, 21549), (1155, 17631), (1485, 13713), (1959, 10395), (2079, 9795), (2835, 7183), (3265, 6237), (3465, 5877), (4455, 4571)]