201998950

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1999}}^1$

素因数の和:2101

約数の個数: 48

約数和(自身を含む): 392832000

約数和(自身を除く): 190833050

約数列:

[1, 2, 5, 10, 25, 43, 47, 50, 86, 94, 215, 235, 430, 470, 1075, 1175, 1999, 2021, 2150, 2350, 3998, 4042, 9995, 10105, 19990, 20210, 49975, 50525, 85957, 93953, 99950, 101050, 171914, 187906, 429785, 469765, 859570, 939530, 2148925, 2348825, 4039979, 4297850, 4697650, 8079958, 20199895, 40399790, 100999475, 201998950]

約数ペア:

[(1, 201998950), (2, 100999475), (5, 40399790), (10, 20199895), (25, 8079958), (43, 4697650), (47, 4297850), (50, 4039979), (86, 2348825), (94, 2148925), (215, 939530), (235, 859570), (430, 469765), (470, 429785), (1075, 187906), (1175, 171914), (1999, 101050), (2021, 99950), (2150, 93953), (2350, 85957), (3998, 50525), (4042, 49975), (9995, 20210), (10105, 19990)]