199895900

素因数分解:

$2^2\times 5^2\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:423

約数の個数: 72

約数和(自身を含む): 445127760

約数和(自身を除く): 245231860

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 73, 100, 139, 146, 197, 278, 292, 365, 394, 556, 695, 730, 788, 985, 1390, 1460, 1825, 1970, 2780, 3475, 3650, 3940, 4925, 6950, 7300, 9850, 10147, 13900, 14381, 19700, 20294, 27383, 28762, 40588, 50735, 54766, 57524, 71905, 101470, 109532, 136915, 143810, 202940, 253675, 273830, 287620, 359525, 507350, 547660, 684575, 719050, 1014700, 1369150, 1438100, 1998959, 2738300, 3997918, 7995836, 9994795, 19989590, 39979180, 49973975, 99947950, 199895900]

約数ペア:

[(1, 199895900), (2, 99947950), (4, 49973975), (5, 39979180), (10, 19989590), (20, 9994795), (25, 7995836), (50, 3997918), (73, 2738300), (100, 1998959), (139, 1438100), (146, 1369150), (197, 1014700), (278, 719050), (292, 684575), (365, 547660), (394, 507350), (556, 359525), (695, 287620), (730, 273830), (788, 253675), (985, 202940), (1390, 143810), (1460, 136915), (1825, 109532), (1970, 101470), (2780, 71905), (3475, 57524), (3650, 54766), (3940, 50735), (4925, 40588), (6950, 28762), (7300, 27383), (9850, 20294), (10147, 19700), (13900, 14381)]