21229880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75821}}^1$

素因数の和:75839

約数の個数: 32

約数和(自身を含む): 54591840

約数和(自身を除く): 33361960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75821, 151642, 303284, 379105, 530747, 606568, 758210, 1061494, 1516420, 2122988, 2653735, 3032840, 4245976, 5307470, 10614940, 21229880]

約数ペア:

[(1, 21229880), (2, 10614940), (4, 5307470), (5, 4245976), (7, 3032840), (8, 2653735), (10, 2122988), (14, 1516420), (20, 1061494), (28, 758210), (35, 606568), (40, 530747), (56, 379105), (70, 303284), (140, 151642), (280, 75821)]