20483715

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{31}}^2$

素因数の和:113

約数の個数: 72

約数和(自身を含む): 40752720

約数和(自身を除く): 20269005

約数列:

[1, 3, 5, 7, 15, 21, 29, 31, 35, 49, 87, 93, 105, 145, 147, 155, 203, 217, 245, 435, 465, 609, 651, 735, 899, 961, 1015, 1085, 1421, 1519, 2697, 2883, 3045, 3255, 4263, 4495, 4557, 4805, 6293, 6727, 7105, 7595, 13485, 14415, 18879, 20181, 21315, 22785, 27869, 31465, 33635, 44051, 47089, 83607, 94395, 100905, 132153, 139345, 141267, 195083, 220255, 235445, 418035, 585249, 660765, 706335, 975415, 1365581, 2926245, 4096743, 6827905, 20483715]

約数ペア:

[(1, 20483715), (3, 6827905), (5, 4096743), (7, 2926245), (15, 1365581), (21, 975415), (29, 706335), (31, 660765), (35, 585249), (49, 418035), (87, 235445), (93, 220255), (105, 195083), (145, 141267), (147, 139345), (155, 132153), (203, 100905), (217, 94395), (245, 83607), (435, 47089), (465, 44051), (609, 33635), (651, 31465), (735, 27869), (899, 22785), (961, 21315), (1015, 20181), (1085, 18879), (1421, 14415), (1519, 13485), (2697, 7595), (2883, 7105), (3045, 6727), (3255, 6293), (4263, 4805), (4495, 4557)]