20305140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1171}}^1$

素因数の和:1217

約数の個数: 72

約数和(自身を含む): 60447072

約数和(自身を除く): 40141932

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 289, 340, 510, 578, 867, 1020, 1156, 1171, 1445, 1734, 2342, 2890, 3468, 3513, 4335, 4684, 5780, 5855, 7026, 8670, 11710, 14052, 17340, 17565, 19907, 23420, 35130, 39814, 59721, 70260, 79628, 99535, 119442, 199070, 238884, 298605, 338419, 398140, 597210, 676838, 1015257, 1194420, 1353676, 1692095, 2030514, 3384190, 4061028, 5076285, 6768380, 10152570, 20305140]

約数ペア:

[(1, 20305140), (2, 10152570), (3, 6768380), (4, 5076285), (5, 4061028), (6, 3384190), (10, 2030514), (12, 1692095), (15, 1353676), (17, 1194420), (20, 1015257), (30, 676838), (34, 597210), (51, 398140), (60, 338419), (68, 298605), (85, 238884), (102, 199070), (170, 119442), (204, 99535), (255, 79628), (289, 70260), (340, 59721), (510, 39814), (578, 35130), (867, 23420), (1020, 19907), (1156, 17565), (1171, 17340), (1445, 14052), (1734, 11710), (2342, 8670), (2890, 7026), (3468, 5855), (3513, 5780), (4335, 4684)]