20665710

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1039}}^1$

素因数の和:1082

約数の個数: 96

約数和(自身を含む): 61326720

約数和(自身を除く): 40661010

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 17, 18, 26, 30, 34, 39, 45, 51, 65, 78, 85, 90, 102, 117, 130, 153, 170, 195, 221, 234, 255, 306, 390, 442, 510, 585, 663, 765, 1039, 1105, 1170, 1326, 1530, 1989, 2078, 2210, 3117, 3315, 3978, 5195, 6234, 6630, 9351, 9945, 10390, 13507, 15585, 17663, 18702, 19890, 27014, 31170, 35326, 40521, 46755, 52989, 67535, 81042, 88315, 93510, 105978, 121563, 135070, 158967, 176630, 202605, 229619, 243126, 264945, 317934, 405210, 459238, 529890, 607815, 688857, 794835, 1148095, 1215630, 1377714, 1589670, 2066571, 2296190, 3444285, 4133142, 6888570, 10332855, 20665710]

約数ペア:

[(1, 20665710), (2, 10332855), (3, 6888570), (5, 4133142), (6, 3444285), (9, 2296190), (10, 2066571), (13, 1589670), (15, 1377714), (17, 1215630), (18, 1148095), (26, 794835), (30, 688857), (34, 607815), (39, 529890), (45, 459238), (51, 405210), (65, 317934), (78, 264945), (85, 243126), (90, 229619), (102, 202605), (117, 176630), (130, 158967), (153, 135070), (170, 121563), (195, 105978), (221, 93510), (234, 88315), (255, 81042), (306, 67535), (390, 52989), (442, 46755), (510, 40521), (585, 35326), (663, 31170), (765, 27014), (1039, 19890), (1105, 18702), (1170, 17663), (1326, 15585), (1530, 13507), (1989, 10390), (2078, 9945), (2210, 9351), (3117, 6630), (3315, 6234), (3978, 5195)]