20917800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{11621}}^1$

素因数の和:11643

約数の個数: 72

約数和(自身を含む): 70254990

約数和(自身を除く): 49337190

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 75, 90, 100, 120, 150, 180, 200, 225, 300, 360, 450, 600, 900, 1800, 11621, 23242, 34863, 46484, 58105, 69726, 92968, 104589, 116210, 139452, 174315, 209178, 232420, 278904, 290525, 348630, 418356, 464840, 522945, 581050, 697260, 836712, 871575, 1045890, 1162100, 1394520, 1743150, 2091780, 2324200, 2614725, 3486300, 4183560, 5229450, 6972600, 10458900, 20917800]

約数ペア:

[(1, 20917800), (2, 10458900), (3, 6972600), (4, 5229450), (5, 4183560), (6, 3486300), (8, 2614725), (9, 2324200), (10, 2091780), (12, 1743150), (15, 1394520), (18, 1162100), (20, 1045890), (24, 871575), (25, 836712), (30, 697260), (36, 581050), (40, 522945), (45, 464840), (50, 418356), (60, 348630), (72, 290525), (75, 278904), (90, 232420), (100, 209178), (120, 174315), (150, 139452), (180, 116210), (200, 104589), (225, 92968), (300, 69726), (360, 58105), (450, 46484), (600, 34863), (900, 23242), (1800, 11621)]