990811012

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^2\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:293

約数の個数: 72

約数和(自身を含む): 1914645600

約数和(自身を除く): 923834588

約数列:

[1, 2, 4, 19, 37, 38, 74, 76, 89, 107, 148, 178, 214, 356, 428, 703, 1369, 1406, 1691, 2033, 2738, 2812, 3293, 3382, 3959, 4066, 5476, 6586, 6764, 7918, 8132, 9523, 13172, 15836, 19046, 26011, 38092, 52022, 62567, 75221, 104044, 121841, 125134, 146483, 150442, 180937, 243682, 250268, 292966, 300884, 352351, 361874, 487364, 585932, 704702, 723748, 1409404, 2314979, 2783177, 4629958, 5566354, 6694669, 9259916, 11132708, 13036987, 13389338, 26073974, 26778676, 52147948, 247702753, 495405506, 990811012]

約数ペア:

[(1, 990811012), (2, 495405506), (4, 247702753), (19, 52147948), (37, 26778676), (38, 26073974), (74, 13389338), (76, 13036987), (89, 11132708), (107, 9259916), (148, 6694669), (178, 5566354), (214, 4629958), (356, 2783177), (428, 2314979), (703, 1409404), (1369, 723748), (1406, 704702), (1691, 585932), (2033, 487364), (2738, 361874), (2812, 352351), (3293, 300884), (3382, 292966), (3959, 250268), (4066, 243682), (5476, 180937), (6586, 150442), (6764, 146483), (7918, 125134), (8132, 121841), (9523, 104044), (13172, 75221), (15836, 62567), (19046, 52022), (26011, 38092)]