20961045

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{541}}^1$

素因数の和:603

約数の個数: 64

約数和(自身を含む): 43706880

約数和(自身を除く): 22745835

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 41, 45, 63, 105, 123, 135, 189, 205, 287, 315, 369, 541, 615, 861, 945, 1107, 1435, 1623, 1845, 2583, 2705, 3787, 4305, 4869, 5535, 7749, 8115, 11361, 12915, 14607, 18935, 22181, 24345, 34083, 38745, 56805, 66543, 73035, 102249, 110905, 155267, 170415, 199629, 332715, 465801, 511245, 598887, 776335, 998145, 1397403, 2329005, 2994435, 4192209, 6987015, 20961045]

約数ペア:

[(1, 20961045), (3, 6987015), (5, 4192209), (7, 2994435), (9, 2329005), (15, 1397403), (21, 998145), (27, 776335), (35, 598887), (41, 511245), (45, 465801), (63, 332715), (105, 199629), (123, 170415), (135, 155267), (189, 110905), (205, 102249), (287, 73035), (315, 66543), (369, 56805), (541, 38745), (615, 34083), (861, 24345), (945, 22181), (1107, 18935), (1435, 14607), (1623, 12915), (1845, 11361), (2583, 8115), (2705, 7749), (3787, 5535), (4305, 4869)]