19638740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:185

約数の個数: 96

約数和(自身を含む): 48988800

約数和(自身を除く): 29350060

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 59, 68, 85, 89, 110, 118, 170, 178, 187, 220, 236, 295, 340, 356, 374, 445, 590, 649, 748, 890, 935, 979, 1003, 1180, 1298, 1513, 1780, 1870, 1958, 2006, 2596, 3026, 3245, 3740, 3916, 4012, 4895, 5015, 5251, 6052, 6490, 7565, 9790, 10030, 10502, 11033, 12980, 15130, 16643, 19580, 20060, 21004, 22066, 26255, 30260, 33286, 44132, 52510, 55165, 57761, 66572, 83215, 89267, 105020, 110330, 115522, 166430, 178534, 220660, 231044, 288805, 332860, 357068, 446335, 577610, 892670, 981937, 1155220, 1785340, 1963874, 3927748, 4909685, 9819370, 19638740]

約数ペア:

[(1, 19638740), (2, 9819370), (4, 4909685), (5, 3927748), (10, 1963874), (11, 1785340), (17, 1155220), (20, 981937), (22, 892670), (34, 577610), (44, 446335), (55, 357068), (59, 332860), (68, 288805), (85, 231044), (89, 220660), (110, 178534), (118, 166430), (170, 115522), (178, 110330), (187, 105020), (220, 89267), (236, 83215), (295, 66572), (340, 57761), (356, 55165), (374, 52510), (445, 44132), (590, 33286), (649, 30260), (748, 26255), (890, 22066), (935, 21004), (979, 20060), (1003, 19580), (1180, 16643), (1298, 15130), (1513, 12980), (1780, 11033), (1870, 10502), (1958, 10030), (2006, 9790), (2596, 7565), (3026, 6490), (3245, 6052), (3740, 5251), (3916, 5015), (4012, 4895)]