19881820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1$

素因数の和:187

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 30921380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 59, 70, 83, 116, 118, 140, 145, 166, 203, 236, 290, 295, 332, 406, 413, 415, 580, 581, 590, 812, 826, 830, 1015, 1162, 1180, 1652, 1660, 1711, 2030, 2065, 2324, 2407, 2905, 3422, 4060, 4130, 4814, 4897, 5810, 6844, 8260, 8555, 9628, 9794, 11620, 11977, 12035, 16849, 17110, 19588, 23954, 24070, 24485, 33698, 34220, 34279, 47908, 48140, 48970, 59885, 67396, 68558, 84245, 97940, 119770, 137116, 142013, 168490, 171395, 239540, 284026, 336980, 342790, 568052, 685580, 710065, 994091, 1420130, 1988182, 2840260, 3976364, 4970455, 9940910, 19881820]

約数ペア:

[(1, 19881820), (2, 9940910), (4, 4970455), (5, 3976364), (7, 2840260), (10, 1988182), (14, 1420130), (20, 994091), (28, 710065), (29, 685580), (35, 568052), (58, 342790), (59, 336980), (70, 284026), (83, 239540), (116, 171395), (118, 168490), (140, 142013), (145, 137116), (166, 119770), (203, 97940), (236, 84245), (290, 68558), (295, 67396), (332, 59885), (406, 48970), (413, 48140), (415, 47908), (580, 34279), (581, 34220), (590, 33698), (812, 24485), (826, 24070), (830, 23954), (1015, 19588), (1162, 17110), (1180, 16849), (1652, 12035), (1660, 11977), (1711, 11620), (2030, 9794), (2065, 9628), (2324, 8555), (2407, 8260), (2905, 6844), (3422, 5810), (4060, 4897), (4130, 4814)]