1385427820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{319223}}^1$

素因数の和:319270

約数の個数: 48

約数和(自身を含む): 3432296448

約数和(自身を除く): 2046868628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 319223, 638446, 1276892, 1596115, 2234561, 3192230, 4469122, 6384460, 8938244, 9895913, 11172805, 19791826, 22345610, 39583652, 44691220, 49479565, 69271391, 98959130, 138542782, 197918260, 277085564, 346356955, 692713910, 1385427820]

約数ペア:

[(1, 1385427820), (2, 692713910), (4, 346356955), (5, 277085564), (7, 197918260), (10, 138542782), (14, 98959130), (20, 69271391), (28, 49479565), (31, 44691220), (35, 39583652), (62, 22345610), (70, 19791826), (124, 11172805), (140, 9895913), (155, 8938244), (217, 6384460), (310, 4469122), (434, 3192230), (620, 2234561), (868, 1596115), (1085, 1276892), (2170, 638446), (4340, 319223)]