196645640

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:522

約数の個数: 64

約数和(自身を含む): 450318960

約数和(自身を除く): 253673320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 173, 181, 314, 346, 362, 628, 692, 724, 785, 865, 905, 1256, 1384, 1448, 1570, 1730, 1810, 3140, 3460, 3620, 6280, 6920, 7240, 27161, 28417, 31313, 54322, 56834, 62626, 108644, 113668, 125252, 135805, 142085, 156565, 217288, 227336, 250504, 271610, 284170, 313130, 543220, 568340, 626260, 1086440, 1136680, 1252520, 4916141, 9832282, 19664564, 24580705, 39329128, 49161410, 98322820, 196645640]

約数ペア:

[(1, 196645640), (2, 98322820), (4, 49161410), (5, 39329128), (8, 24580705), (10, 19664564), (20, 9832282), (40, 4916141), (157, 1252520), (173, 1136680), (181, 1086440), (314, 626260), (346, 568340), (362, 543220), (628, 313130), (692, 284170), (724, 271610), (785, 250504), (865, 227336), (905, 217288), (1256, 156565), (1384, 142085), (1448, 135805), (1570, 125252), (1730, 113668), (1810, 108644), (3140, 62626), (3460, 56834), (3620, 54322), (6280, 31313), (6920, 28417), (7240, 27161)]