142990000

素因数分解:

$2^4\times 5^4\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:288

約数の個数: 100

約数和(自身を含む): 352512160

約数和(自身を除く): 209522160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 79, 80, 100, 125, 158, 181, 200, 250, 316, 362, 395, 400, 500, 625, 632, 724, 790, 905, 1000, 1250, 1264, 1448, 1580, 1810, 1975, 2000, 2500, 2896, 3160, 3620, 3950, 4525, 5000, 6320, 7240, 7900, 9050, 9875, 10000, 14299, 14480, 15800, 18100, 19750, 22625, 28598, 31600, 36200, 39500, 45250, 49375, 57196, 71495, 72400, 79000, 90500, 98750, 113125, 114392, 142990, 158000, 181000, 197500, 226250, 228784, 285980, 357475, 362000, 395000, 452500, 571960, 714950, 790000, 905000, 1143920, 1429900, 1787375, 1810000, 2859800, 3574750, 5719600, 7149500, 8936875, 14299000, 17873750, 28598000, 35747500, 71495000, 142990000]

約数ペア:

[(1, 142990000), (2, 71495000), (4, 35747500), (5, 28598000), (8, 17873750), (10, 14299000), (16, 8936875), (20, 7149500), (25, 5719600), (40, 3574750), (50, 2859800), (79, 1810000), (80, 1787375), (100, 1429900), (125, 1143920), (158, 905000), (181, 790000), (200, 714950), (250, 571960), (316, 452500), (362, 395000), (395, 362000), (400, 357475), (500, 285980), (625, 228784), (632, 226250), (724, 197500), (790, 181000), (905, 158000), (1000, 142990), (1250, 114392), (1264, 113125), (1448, 98750), (1580, 90500), (1810, 79000), (1975, 72400), (2000, 71495), (2500, 57196), (2896, 49375), (3160, 45250), (3620, 39500), (3950, 36200), (4525, 31600), (5000, 28598), (6320, 22625), (7240, 19750), (7900, 18100), (9050, 15800), (9875, 14480), (10000, 14299)]