28001204

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{397}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 61514880

約数和(自身を除く): 33513676

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 229, 308, 397, 458, 794, 916, 1588, 1603, 2519, 2779, 3206, 4367, 5038, 5558, 6412, 8734, 10076, 11116, 17468, 17633, 30569, 35266, 61138, 70532, 90913, 122276, 181826, 363652, 636391, 1000043, 1272782, 2000086, 2545564, 4000172, 7000301, 14000602, 28001204]

約数ペア:

[(1, 28001204), (2, 14000602), (4, 7000301), (7, 4000172), (11, 2545564), (14, 2000086), (22, 1272782), (28, 1000043), (44, 636391), (77, 363652), (154, 181826), (229, 122276), (308, 90913), (397, 70532), (458, 61138), (794, 35266), (916, 30569), (1588, 17633), (1603, 17468), (2519, 11116), (2779, 10076), (3206, 8734), (4367, 6412), (5038, 5558)]