18860000

素因数分解:

$2^5\times 5^4\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:94

約数の個数: 120

約数和(自身を含む): 49596624

約数和(自身を除く): 30736624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 41, 46, 50, 80, 82, 92, 100, 115, 125, 160, 164, 184, 200, 205, 230, 250, 328, 368, 400, 410, 460, 500, 575, 625, 656, 736, 800, 820, 920, 943, 1000, 1025, 1150, 1250, 1312, 1640, 1840, 1886, 2000, 2050, 2300, 2500, 2875, 3280, 3680, 3772, 4000, 4100, 4600, 4715, 5000, 5125, 5750, 6560, 7544, 8200, 9200, 9430, 10000, 10250, 11500, 14375, 15088, 16400, 18400, 18860, 20000, 20500, 23000, 23575, 25625, 28750, 30176, 32800, 37720, 41000, 46000, 47150, 51250, 57500, 75440, 82000, 92000, 94300, 102500, 115000, 117875, 150880, 164000, 188600, 205000, 230000, 235750, 377200, 410000, 460000, 471500, 589375, 754400, 820000, 943000, 1178750, 1886000, 2357500, 3772000, 4715000, 9430000, 18860000]

約数ペア:

[(1, 18860000), (2, 9430000), (4, 4715000), (5, 3772000), (8, 2357500), (10, 1886000), (16, 1178750), (20, 943000), (23, 820000), (25, 754400), (32, 589375), (40, 471500), (41, 460000), (46, 410000), (50, 377200), (80, 235750), (82, 230000), (92, 205000), (100, 188600), (115, 164000), (125, 150880), (160, 117875), (164, 115000), (184, 102500), (200, 94300), (205, 92000), (230, 82000), (250, 75440), (328, 57500), (368, 51250), (400, 47150), (410, 46000), (460, 41000), (500, 37720), (575, 32800), (625, 30176), (656, 28750), (736, 25625), (800, 23575), (820, 23000), (920, 20500), (943, 20000), (1000, 18860), (1025, 18400), (1150, 16400), (1250, 15088), (1312, 14375), (1640, 11500), (1840, 10250), (1886, 10000), (2000, 9430), (2050, 9200), (2300, 8200), (2500, 7544), (2875, 6560), (3280, 5750), (3680, 5125), (3772, 5000), (4000, 4715), (4100, 4600)]