15581900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 36456000

約数和(自身を除く): 20874100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 59, 76, 95, 100, 118, 139, 190, 236, 278, 295, 380, 475, 556, 590, 695, 950, 1121, 1180, 1390, 1475, 1900, 2242, 2641, 2780, 2950, 3475, 4484, 5282, 5605, 5900, 6950, 8201, 10564, 11210, 13205, 13900, 16402, 22420, 26410, 28025, 32804, 41005, 52820, 56050, 66025, 82010, 112100, 132050, 155819, 164020, 205025, 264100, 311638, 410050, 623276, 779095, 820100, 1558190, 3116380, 3895475, 7790950, 15581900]

約数ペア:

[(1, 15581900), (2, 7790950), (4, 3895475), (5, 3116380), (10, 1558190), (19, 820100), (20, 779095), (25, 623276), (38, 410050), (50, 311638), (59, 264100), (76, 205025), (95, 164020), (100, 155819), (118, 132050), (139, 112100), (190, 82010), (236, 66025), (278, 56050), (295, 52820), (380, 41005), (475, 32804), (556, 28025), (590, 26410), (695, 22420), (950, 16402), (1121, 13900), (1180, 13205), (1390, 11210), (1475, 10564), (1900, 8201), (2242, 6950), (2641, 5900), (2780, 5605), (2950, 5282), (3475, 4484)]