20554980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:293

約数の個数: 96

約数和(自身を含む): 60673536

約数和(自身を除く): 40118556

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 47, 60, 74, 94, 111, 141, 148, 185, 188, 197, 222, 235, 282, 370, 394, 444, 470, 555, 564, 591, 705, 740, 788, 940, 985, 1110, 1182, 1410, 1739, 1970, 2220, 2364, 2820, 2955, 3478, 3940, 5217, 5910, 6956, 7289, 8695, 9259, 10434, 11820, 14578, 17390, 18518, 20868, 21867, 26085, 27777, 29156, 34780, 36445, 37036, 43734, 46295, 52170, 55554, 72890, 87468, 92590, 104340, 109335, 111108, 138885, 145780, 185180, 218670, 277770, 342583, 437340, 555540, 685166, 1027749, 1370332, 1712915, 2055498, 3425830, 4110996, 5138745, 6851660, 10277490, 20554980]

約数ペア:

[(1, 20554980), (2, 10277490), (3, 6851660), (4, 5138745), (5, 4110996), (6, 3425830), (10, 2055498), (12, 1712915), (15, 1370332), (20, 1027749), (30, 685166), (37, 555540), (47, 437340), (60, 342583), (74, 277770), (94, 218670), (111, 185180), (141, 145780), (148, 138885), (185, 111108), (188, 109335), (197, 104340), (222, 92590), (235, 87468), (282, 72890), (370, 55554), (394, 52170), (444, 46295), (470, 43734), (555, 37036), (564, 36445), (591, 34780), (705, 29156), (740, 27777), (788, 26085), (940, 21867), (985, 20868), (1110, 18518), (1182, 17390), (1410, 14578), (1739, 11820), (1970, 10434), (2220, 9259), (2364, 8695), (2820, 7289), (2955, 6956), (3478, 5910), (3940, 5217)]