15659920

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3209}}^1$

素因数の和:3283

約数の個数: 40

約数和(自身を含む): 37017720

約数和(自身を除く): 21357800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 3209, 4880, 6418, 12836, 16045, 25672, 32090, 51344, 64180, 128360, 195749, 256720, 391498, 782996, 978745, 1565992, 1957490, 3131984, 3914980, 7829960, 15659920]

約数ペア:

[(1, 15659920), (2, 7829960), (4, 3914980), (5, 3131984), (8, 1957490), (10, 1565992), (16, 978745), (20, 782996), (40, 391498), (61, 256720), (80, 195749), (122, 128360), (244, 64180), (305, 51344), (488, 32090), (610, 25672), (976, 16045), (1220, 12836), (2440, 6418), (3209, 4880)]