201520942

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:281

約数の個数: 64

約数和(自身を含む): 371404800

約数和(自身を除く): 169883858

約数列:

[1, 2, 7, 14, 29, 58, 61, 79, 103, 122, 158, 203, 206, 406, 427, 553, 721, 854, 1106, 1442, 1769, 2291, 2987, 3538, 4582, 4819, 5974, 6283, 8137, 9638, 12383, 12566, 16037, 16274, 20909, 24766, 32074, 33733, 41818, 43981, 56959, 67466, 87962, 113918, 139751, 182207, 235973, 279502, 364414, 471946, 496357, 978257, 992714, 1275449, 1651811, 1956514, 2550898, 3303622, 3474499, 6948998, 14394353, 28788706, 100760471, 201520942]

約数ペア:

[(1, 201520942), (2, 100760471), (7, 28788706), (14, 14394353), (29, 6948998), (58, 3474499), (61, 3303622), (79, 2550898), (103, 1956514), (122, 1651811), (158, 1275449), (203, 992714), (206, 978257), (406, 496357), (427, 471946), (553, 364414), (721, 279502), (854, 235973), (1106, 182207), (1442, 139751), (1769, 113918), (2291, 87962), (2987, 67466), (3538, 56959), (4582, 43981), (4819, 41818), (5974, 33733), (6283, 32074), (8137, 24766), (9638, 20909), (12383, 16274), (12566, 16037)]