28417000

素因数分解:

$2^3\times 5^3\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:359

約数の個数: 64

約数和(自身を含む): 67289040

約数和(自身を除く): 38872040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 157, 181, 200, 250, 314, 362, 500, 628, 724, 785, 905, 1000, 1256, 1448, 1570, 1810, 3140, 3620, 3925, 4525, 6280, 7240, 7850, 9050, 15700, 18100, 19625, 22625, 28417, 31400, 36200, 39250, 45250, 56834, 78500, 90500, 113668, 142085, 157000, 181000, 227336, 284170, 568340, 710425, 1136680, 1420850, 2841700, 3552125, 5683400, 7104250, 14208500, 28417000]

約数ペア:

[(1, 28417000), (2, 14208500), (4, 7104250), (5, 5683400), (8, 3552125), (10, 2841700), (20, 1420850), (25, 1136680), (40, 710425), (50, 568340), (100, 284170), (125, 227336), (157, 181000), (181, 157000), (200, 142085), (250, 113668), (314, 90500), (362, 78500), (500, 56834), (628, 45250), (724, 39250), (785, 36200), (905, 31400), (1000, 28417), (1256, 22625), (1448, 19625), (1570, 18100), (1810, 15700), (3140, 9050), (3620, 7850), (3925, 7240), (4525, 6280)]