20556990

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{619}}^1$

素因数の和:679

約数の個数: 80

約数和(自身を含む): 56715120

約数和(自身を除く): 36158130

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 41, 45, 54, 81, 82, 90, 123, 135, 162, 205, 246, 270, 369, 405, 410, 615, 619, 738, 810, 1107, 1230, 1238, 1845, 1857, 2214, 3095, 3321, 3690, 3714, 5535, 5571, 6190, 6642, 9285, 11070, 11142, 16605, 16713, 18570, 25379, 27855, 33210, 33426, 50139, 50758, 55710, 76137, 83565, 100278, 126895, 152274, 167130, 228411, 250695, 253790, 380685, 456822, 501390, 685233, 761370, 1142055, 1370466, 2055699, 2284110, 3426165, 4111398, 6852330, 10278495, 20556990]

約数ペア:

[(1, 20556990), (2, 10278495), (3, 6852330), (5, 4111398), (6, 3426165), (9, 2284110), (10, 2055699), (15, 1370466), (18, 1142055), (27, 761370), (30, 685233), (41, 501390), (45, 456822), (54, 380685), (81, 253790), (82, 250695), (90, 228411), (123, 167130), (135, 152274), (162, 126895), (205, 100278), (246, 83565), (270, 76137), (369, 55710), (405, 50758), (410, 50139), (615, 33426), (619, 33210), (738, 27855), (810, 25379), (1107, 18570), (1230, 16713), (1238, 16605), (1845, 11142), (1857, 11070), (2214, 9285), (3095, 6642), (3321, 6190), (3690, 5571), (3714, 5535)]