16439920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{947}}^1$

素因数の和:998

約数の個数: 80

約数和(自身を含む): 45139968

約数和(自身を除く): 28700048

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 947, 1085, 1240, 1736, 1894, 2170, 2480, 3472, 3788, 4340, 4735, 6629, 7576, 8680, 9470, 13258, 15152, 17360, 18940, 26516, 29357, 33145, 37880, 53032, 58714, 66290, 75760, 106064, 117428, 132580, 146785, 205499, 234856, 265160, 293570, 410998, 469712, 530320, 587140, 821996, 1027495, 1174280, 1643992, 2054990, 2348560, 3287984, 4109980, 8219960, 16439920]

約数ペア:

[(1, 16439920), (2, 8219960), (4, 4109980), (5, 3287984), (7, 2348560), (8, 2054990), (10, 1643992), (14, 1174280), (16, 1027495), (20, 821996), (28, 587140), (31, 530320), (35, 469712), (40, 410998), (56, 293570), (62, 265160), (70, 234856), (80, 205499), (112, 146785), (124, 132580), (140, 117428), (155, 106064), (217, 75760), (248, 66290), (280, 58714), (310, 53032), (434, 37880), (496, 33145), (560, 29357), (620, 26516), (868, 18940), (947, 17360), (1085, 15152), (1240, 13258), (1736, 9470), (1894, 8680), (2170, 7576), (2480, 6629), (3472, 4735), (3788, 4340)]