21321840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1217}}^1$

素因数の和:1306

約数の個数: 80

約数和(自身を含む): 67058208

約数和(自身を除く): 45736368

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 73, 80, 120, 146, 219, 240, 292, 365, 438, 584, 730, 876, 1095, 1168, 1217, 1460, 1752, 2190, 2434, 2920, 3504, 3651, 4380, 4868, 5840, 6085, 7302, 8760, 9736, 12170, 14604, 17520, 18255, 19472, 24340, 29208, 36510, 48680, 58416, 73020, 88841, 97360, 146040, 177682, 266523, 292080, 355364, 444205, 533046, 710728, 888410, 1066092, 1332615, 1421456, 1776820, 2132184, 2665230, 3553640, 4264368, 5330460, 7107280, 10660920, 21321840]

約数ペア:

[(1, 21321840), (2, 10660920), (3, 7107280), (4, 5330460), (5, 4264368), (6, 3553640), (8, 2665230), (10, 2132184), (12, 1776820), (15, 1421456), (16, 1332615), (20, 1066092), (24, 888410), (30, 710728), (40, 533046), (48, 444205), (60, 355364), (73, 292080), (80, 266523), (120, 177682), (146, 146040), (219, 97360), (240, 88841), (292, 73020), (365, 58416), (438, 48680), (584, 36510), (730, 29208), (876, 24340), (1095, 19472), (1168, 18255), (1217, 17520), (1460, 14604), (1752, 12170), (2190, 9736), (2434, 8760), (2920, 7302), (3504, 6085), (3651, 5840), (4380, 4868)]