20780610

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:323

約数の個数: 64

約数和(自身を含む): 51891840

約数和(自身を除く): 31111230

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 89, 129, 178, 181, 215, 258, 267, 362, 430, 445, 534, 543, 645, 890, 905, 1086, 1290, 1335, 1810, 2670, 2715, 3827, 5430, 7654, 7783, 11481, 15566, 16109, 19135, 22962, 23349, 32218, 38270, 38915, 46698, 48327, 57405, 77830, 80545, 96654, 114810, 116745, 161090, 233490, 241635, 483270, 692687, 1385374, 2078061, 3463435, 4156122, 6926870, 10390305, 20780610]

約数ペア:

[(1, 20780610), (2, 10390305), (3, 6926870), (5, 4156122), (6, 3463435), (10, 2078061), (15, 1385374), (30, 692687), (43, 483270), (86, 241635), (89, 233490), (129, 161090), (178, 116745), (181, 114810), (215, 96654), (258, 80545), (267, 77830), (362, 57405), (430, 48327), (445, 46698), (534, 38915), (543, 38270), (645, 32218), (890, 23349), (905, 22962), (1086, 19135), (1290, 16109), (1335, 15566), (1810, 11481), (2670, 7783), (2715, 7654), (3827, 5430)]