20201672505

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{587}}^1$

素因数の和:839

約数の個数: 128

約数和(自身を含む): 38944604160

約数和(自身を除く): 18742931655

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 97, 105, 109, 155, 217, 291, 327, 465, 485, 545, 587, 651, 679, 763, 1085, 1455, 1635, 1761, 2037, 2289, 2935, 3007, 3255, 3379, 3395, 3815, 4109, 8805, 9021, 10137, 10185, 10573, 11445, 12327, 15035, 16895, 18197, 20545, 21049, 23653, 31719, 45105, 50685, 52865, 54591, 56939, 61635, 63147, 63983, 70959, 74011, 90985, 105245, 118265, 127379, 158595, 170817, 191949, 222033, 272955, 284695, 315735, 319915, 327763, 354795, 370055, 382137, 398573, 447881, 636895, 854085, 959745, 983289, 1110165, 1195719, 1343643, 1638815, 1765109, 1910685, 1983473, 1992865, 2239405, 2294341, 4916445, 5295327, 5950419, 5978595, 6206351, 6718215, 6883023, 8825545, 9917365, 11471705, 12355763, 13884311, 18619053, 26476635, 29752095, 31031755, 34415115, 37067289, 41652933, 43444457, 61778815, 69421555, 93095265, 130333371, 185336445, 192396881, 208264665, 217222285, 577190643, 651666855, 961984405, 1346778167, 2885953215, 4040334501, 6733890835, 20201672505]

約数ペア:

[(1, 20201672505), (3, 6733890835), (5, 4040334501), (7, 2885953215), (15, 1346778167), (21, 961984405), (31, 651666855), (35, 577190643), (93, 217222285), (97, 208264665), (105, 192396881), (109, 185336445), (155, 130333371), (217, 93095265), (291, 69421555), (327, 61778815), (465, 43444457), (485, 41652933), (545, 37067289), (587, 34415115), (651, 31031755), (679, 29752095), (763, 26476635), (1085, 18619053), (1455, 13884311), (1635, 12355763), (1761, 11471705), (2037, 9917365), (2289, 8825545), (2935, 6883023), (3007, 6718215), (3255, 6206351), (3379, 5978595), (3395, 5950419), (3815, 5295327), (4109, 4916445), (8805, 2294341), (9021, 2239405), (10137, 1992865), (10185, 1983473), (10573, 1910685), (11445, 1765109), (12327, 1638815), (15035, 1343643), (16895, 1195719), (18197, 1110165), (20545, 983289), (21049, 959745), (23653, 854085), (31719, 636895), (45105, 447881), (50685, 398573), (52865, 382137), (54591, 370055), (56939, 354795), (61635, 327763), (63147, 319915), (63983, 315735), (70959, 284695), (74011, 272955), (90985, 222033), (105245, 191949), (118265, 170817), (127379, 158595)]