21201320

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{373}}^1$

素因数の和:427

約数の個数: 96

約数和(自身を含む): 57558600

約数和(自身を除く): 36357280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 49, 56, 58, 70, 98, 116, 140, 145, 196, 203, 232, 245, 280, 290, 373, 392, 406, 490, 580, 746, 812, 980, 1015, 1160, 1421, 1492, 1624, 1865, 1960, 2030, 2611, 2842, 2984, 3730, 4060, 5222, 5684, 7105, 7460, 8120, 10444, 10817, 11368, 13055, 14210, 14920, 18277, 20888, 21634, 26110, 28420, 36554, 43268, 52220, 54085, 56840, 73108, 75719, 86536, 91385, 104440, 108170, 146216, 151438, 182770, 216340, 302876, 365540, 378595, 432680, 530033, 605752, 731080, 757190, 1060066, 1514380, 2120132, 2650165, 3028760, 4240264, 5300330, 10600660, 21201320]

約数ペア:

[(1, 21201320), (2, 10600660), (4, 5300330), (5, 4240264), (7, 3028760), (8, 2650165), (10, 2120132), (14, 1514380), (20, 1060066), (28, 757190), (29, 731080), (35, 605752), (40, 530033), (49, 432680), (56, 378595), (58, 365540), (70, 302876), (98, 216340), (116, 182770), (140, 151438), (145, 146216), (196, 108170), (203, 104440), (232, 91385), (245, 86536), (280, 75719), (290, 73108), (373, 56840), (392, 54085), (406, 52220), (490, 43268), (580, 36554), (746, 28420), (812, 26110), (980, 21634), (1015, 20888), (1160, 18277), (1421, 14920), (1492, 14210), (1624, 13055), (1865, 11368), (1960, 10817), (2030, 10444), (2611, 8120), (2842, 7460), (2984, 7105), (3730, 5684), (4060, 5222)]