20681700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5303}}^1$

素因数の和:5333

約数の個数: 72

約数和(自身を含む): 64454208

約数和(自身を除く): 43772508

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5303, 10606, 15909, 21212, 26515, 31818, 53030, 63636, 68939, 79545, 106060, 132575, 137878, 159090, 206817, 265150, 275756, 318180, 344695, 397725, 413634, 530300, 689390, 795450, 827268, 1034085, 1378780, 1590900, 1723475, 2068170, 3446950, 4136340, 5170425, 6893900, 10340850, 20681700]

約数ペア:

[(1, 20681700), (2, 10340850), (3, 6893900), (4, 5170425), (5, 4136340), (6, 3446950), (10, 2068170), (12, 1723475), (13, 1590900), (15, 1378780), (20, 1034085), (25, 827268), (26, 795450), (30, 689390), (39, 530300), (50, 413634), (52, 397725), (60, 344695), (65, 318180), (75, 275756), (78, 265150), (100, 206817), (130, 159090), (150, 137878), (156, 132575), (195, 106060), (260, 79545), (300, 68939), (325, 63636), (390, 53030), (650, 31818), (780, 26515), (975, 21212), (1300, 15909), (1950, 10606), (3900, 5303)]