16639980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{39619}}^1$

素因数の和:39638

約数の個数: 48

約数和(自身を含む): 53249280

約数和(自身を除く): 36609300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 39619, 79238, 118857, 158476, 198095, 237714, 277333, 396190, 475428, 554666, 594285, 792380, 831999, 1109332, 1188570, 1386665, 1663998, 2377140, 2773330, 3327996, 4159995, 5546660, 8319990, 16639980]

約数ペア:

[(1, 16639980), (2, 8319990), (3, 5546660), (4, 4159995), (5, 3327996), (6, 2773330), (7, 2377140), (10, 1663998), (12, 1386665), (14, 1188570), (15, 1109332), (20, 831999), (21, 792380), (28, 594285), (30, 554666), (35, 475428), (42, 396190), (60, 277333), (70, 237714), (84, 198095), (105, 158476), (140, 118857), (210, 79238), (420, 39619)]