18640000

素因数分解:

$2^7\times 5^4\times {\mathrm{233}}^1$

素因数の和:267

約数の個数: 80

約数和(自身を含む): 46602270

約数和(自身を除く): 27962270

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 233, 250, 320, 400, 466, 500, 625, 640, 800, 932, 1000, 1165, 1250, 1600, 1864, 2000, 2330, 2500, 3200, 3728, 4000, 4660, 5000, 5825, 7456, 8000, 9320, 10000, 11650, 14912, 16000, 18640, 20000, 23300, 29125, 29824, 37280, 40000, 46600, 58250, 74560, 80000, 93200, 116500, 145625, 149120, 186400, 233000, 291250, 372800, 466000, 582500, 745600, 932000, 1165000, 1864000, 2330000, 3728000, 4660000, 9320000, 18640000]

約数ペア:

[(1, 18640000), (2, 9320000), (4, 4660000), (5, 3728000), (8, 2330000), (10, 1864000), (16, 1165000), (20, 932000), (25, 745600), (32, 582500), (40, 466000), (50, 372800), (64, 291250), (80, 233000), (100, 186400), (125, 149120), (128, 145625), (160, 116500), (200, 93200), (233, 80000), (250, 74560), (320, 58250), (400, 46600), (466, 40000), (500, 37280), (625, 29824), (640, 29125), (800, 23300), (932, 20000), (1000, 18640), (1165, 16000), (1250, 14912), (1600, 11650), (1864, 10000), (2000, 9320), (2330, 8000), (2500, 7456), (3200, 5825), (3728, 5000), (4000, 4660)]