19892691

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{227}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 15959853

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 107, 117, 227, 273, 321, 681, 749, 819, 963, 1391, 1589, 2043, 2247, 2951, 4173, 4767, 6741, 8853, 9737, 12519, 14301, 20657, 24289, 26559, 29211, 61971, 72867, 87633, 170023, 185913, 218601, 315757, 510069, 947271, 1530207, 2210299, 2841813, 6630897, 19892691]

約数ペア:

[(1, 19892691), (3, 6630897), (7, 2841813), (9, 2210299), (13, 1530207), (21, 947271), (39, 510069), (63, 315757), (91, 218601), (107, 185913), (117, 170023), (227, 87633), (273, 72867), (321, 61971), (681, 29211), (749, 26559), (819, 24289), (963, 20657), (1391, 14301), (1589, 12519), (2043, 9737), (2247, 8853), (2951, 6741), (4173, 4767)]