20398644

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1327}}^1$

素因数の和:1405

約数の個数: 72

約数和(自身を含む): 59940608

約数和(自身を除く): 39541964

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 61, 63, 84, 122, 126, 183, 244, 252, 366, 427, 549, 732, 854, 1098, 1281, 1327, 1708, 2196, 2562, 2654, 3843, 3981, 5124, 5308, 7686, 7962, 9289, 11943, 15372, 15924, 18578, 23886, 27867, 37156, 47772, 55734, 80947, 83601, 111468, 161894, 167202, 242841, 323788, 334404, 485682, 566629, 728523, 971364, 1133258, 1457046, 1699887, 2266516, 2914092, 3399774, 5099661, 6799548, 10199322, 20398644]

約数ペア:

[(1, 20398644), (2, 10199322), (3, 6799548), (4, 5099661), (6, 3399774), (7, 2914092), (9, 2266516), (12, 1699887), (14, 1457046), (18, 1133258), (21, 971364), (28, 728523), (36, 566629), (42, 485682), (61, 334404), (63, 323788), (84, 242841), (122, 167202), (126, 161894), (183, 111468), (244, 83601), (252, 80947), (366, 55734), (427, 47772), (549, 37156), (732, 27867), (854, 23886), (1098, 18578), (1281, 15924), (1327, 15372), (1708, 11943), (2196, 9289), (2562, 7962), (2654, 7686), (3843, 5308), (3981, 5124)]