20453000

素因数分解:

$2^3\times 5^3\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 48550320

約数和(自身を除く): 28097320

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 113, 125, 181, 200, 226, 250, 362, 452, 500, 565, 724, 904, 905, 1000, 1130, 1448, 1810, 2260, 2825, 3620, 4520, 4525, 5650, 7240, 9050, 11300, 14125, 18100, 20453, 22600, 22625, 28250, 36200, 40906, 45250, 56500, 81812, 90500, 102265, 113000, 163624, 181000, 204530, 409060, 511325, 818120, 1022650, 2045300, 2556625, 4090600, 5113250, 10226500, 20453000]

約数ペア:

[(1, 20453000), (2, 10226500), (4, 5113250), (5, 4090600), (8, 2556625), (10, 2045300), (20, 1022650), (25, 818120), (40, 511325), (50, 409060), (100, 204530), (113, 181000), (125, 163624), (181, 113000), (200, 102265), (226, 90500), (250, 81812), (362, 56500), (452, 45250), (500, 40906), (565, 36200), (724, 28250), (904, 22625), (905, 22600), (1000, 20453), (1130, 18100), (1448, 14125), (1810, 11300), (2260, 9050), (2825, 7240), (3620, 5650), (4520, 4525)]