20238160

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{647}}^1$

素因数の和:700

約数の個数: 80

約数和(自身を含む): 52068096

約数和(自身を除く): 31829936

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 647, 680, 782, 920, 1294, 1360, 1564, 1840, 1955, 2588, 3128, 3235, 3910, 5176, 6256, 6470, 7820, 10352, 10999, 12940, 14881, 15640, 21998, 25880, 29762, 31280, 43996, 51760, 54995, 59524, 74405, 87992, 109990, 119048, 148810, 175984, 219980, 238096, 252977, 297620, 439960, 505954, 595240, 879920, 1011908, 1190480, 1264885, 2023816, 2529770, 4047632, 5059540, 10119080, 20238160]

約数ペア:

[(1, 20238160), (2, 10119080), (4, 5059540), (5, 4047632), (8, 2529770), (10, 2023816), (16, 1264885), (17, 1190480), (20, 1011908), (23, 879920), (34, 595240), (40, 505954), (46, 439960), (68, 297620), (80, 252977), (85, 238096), (92, 219980), (115, 175984), (136, 148810), (170, 119048), (184, 109990), (230, 87992), (272, 74405), (340, 59524), (368, 54995), (391, 51760), (460, 43996), (647, 31280), (680, 29762), (782, 25880), (920, 21998), (1294, 15640), (1360, 14881), (1564, 12940), (1840, 10999), (1955, 10352), (2588, 7820), (3128, 6470), (3235, 6256), (3910, 5176)]