21888780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{743}}^1$

素因数の和:1246

約数の個数: 48

約数和(自身を含む): 61496064

約数和(自身を除く): 39607284

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 491, 743, 982, 1473, 1486, 1964, 2229, 2455, 2946, 2972, 3715, 4458, 4910, 5892, 7365, 7430, 8916, 9820, 11145, 14730, 14860, 22290, 29460, 44580, 364813, 729626, 1094439, 1459252, 1824065, 2188878, 3648130, 4377756, 5472195, 7296260, 10944390, 21888780]

約数ペア:

[(1, 21888780), (2, 10944390), (3, 7296260), (4, 5472195), (5, 4377756), (6, 3648130), (10, 2188878), (12, 1824065), (15, 1459252), (20, 1094439), (30, 729626), (60, 364813), (491, 44580), (743, 29460), (982, 22290), (1473, 14860), (1486, 14730), (1964, 11145), (2229, 9820), (2455, 8916), (2946, 7430), (2972, 7365), (3715, 5892), (4458, 4910)]