20398620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1051

約数の個数: 96

約数和(自身を含む): 64382976

約数和(自身を除く): 43984356

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 31, 33, 44, 55, 60, 62, 66, 93, 110, 124, 132, 155, 165, 186, 220, 310, 330, 341, 372, 465, 620, 660, 682, 930, 997, 1023, 1364, 1705, 1860, 1994, 2046, 2991, 3410, 3988, 4092, 4985, 5115, 5982, 6820, 9970, 10230, 10967, 11964, 14955, 19940, 20460, 21934, 29910, 30907, 32901, 43868, 54835, 59820, 61814, 65802, 92721, 109670, 123628, 131604, 154535, 164505, 185442, 219340, 309070, 329010, 339977, 370884, 463605, 618140, 658020, 679954, 927210, 1019931, 1359908, 1699885, 1854420, 2039862, 3399770, 4079724, 5099655, 6799540, 10199310, 20398620]

約数ペア:

[(1, 20398620), (2, 10199310), (3, 6799540), (4, 5099655), (5, 4079724), (6, 3399770), (10, 2039862), (11, 1854420), (12, 1699885), (15, 1359908), (20, 1019931), (22, 927210), (30, 679954), (31, 658020), (33, 618140), (44, 463605), (55, 370884), (60, 339977), (62, 329010), (66, 309070), (93, 219340), (110, 185442), (124, 164505), (132, 154535), (155, 131604), (165, 123628), (186, 109670), (220, 92721), (310, 65802), (330, 61814), (341, 59820), (372, 54835), (465, 43868), (620, 32901), (660, 30907), (682, 29910), (930, 21934), (997, 20460), (1023, 19940), (1364, 14955), (1705, 11964), (1860, 10967), (1994, 10230), (2046, 9970), (2991, 6820), (3410, 5982), (3988, 5115), (4092, 4985)]