21416460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27457}}^1$

素因数の和:27482

約数の個数: 48

約数和(自身を含む): 64581216

約数和(自身を除く): 43164756

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27457, 54914, 82371, 109828, 137285, 164742, 274570, 329484, 356941, 411855, 549140, 713882, 823710, 1070823, 1427764, 1647420, 1784705, 2141646, 3569410, 4283292, 5354115, 7138820, 10708230, 21416460]

約数ペア:

[(1, 21416460), (2, 10708230), (3, 7138820), (4, 5354115), (5, 4283292), (6, 3569410), (10, 2141646), (12, 1784705), (13, 1647420), (15, 1427764), (20, 1070823), (26, 823710), (30, 713882), (39, 549140), (52, 411855), (60, 356941), (65, 329484), (78, 274570), (130, 164742), (156, 137285), (195, 109828), (260, 82371), (390, 54914), (780, 27457)]