21691644

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{659}}^1$

素因数の和:890

約数の個数: 48

約数和(自身を含む): 54848640

約数和(自身を除く): 33156996

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 211, 422, 633, 659, 844, 1266, 1318, 1977, 2532, 2636, 2743, 3954, 5486, 7908, 8229, 8567, 10972, 16458, 17134, 25701, 32916, 34268, 51402, 102804, 139049, 278098, 417147, 556196, 834294, 1668588, 1807637, 3615274, 5422911, 7230548, 10845822, 21691644]

約数ペア:

[(1, 21691644), (2, 10845822), (3, 7230548), (4, 5422911), (6, 3615274), (12, 1807637), (13, 1668588), (26, 834294), (39, 556196), (52, 417147), (78, 278098), (156, 139049), (211, 102804), (422, 51402), (633, 34268), (659, 32916), (844, 25701), (1266, 17134), (1318, 16458), (1977, 10972), (2532, 8567), (2636, 8229), (2743, 7908), (3954, 5486)]