20426700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:232

約数の個数: 144

約数和(自身を含む): 68995584

約数和(自身を除く): 48568884

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 71, 75, 84, 100, 105, 137, 140, 142, 150, 175, 210, 213, 274, 284, 300, 350, 355, 411, 420, 426, 497, 525, 548, 685, 700, 710, 822, 852, 959, 994, 1050, 1065, 1370, 1420, 1491, 1644, 1775, 1918, 1988, 2055, 2100, 2130, 2485, 2740, 2877, 2982, 3425, 3550, 3836, 4110, 4260, 4795, 4970, 5325, 5754, 5964, 6850, 7100, 7455, 8220, 9590, 9727, 9940, 10275, 10650, 11508, 12425, 13700, 14385, 14910, 19180, 19454, 20550, 21300, 23975, 24850, 28770, 29181, 29820, 37275, 38908, 41100, 47950, 48635, 49700, 57540, 58362, 68089, 71925, 74550, 95900, 97270, 116724, 136178, 143850, 145905, 149100, 194540, 204267, 243175, 272356, 287700, 291810, 340445, 408534, 486350, 583620, 680890, 729525, 817068, 972700, 1021335, 1361780, 1459050, 1702225, 2042670, 2918100, 3404450, 4085340, 5106675, 6808900, 10213350, 20426700]

約数ペア:

[(1, 20426700), (2, 10213350), (3, 6808900), (4, 5106675), (5, 4085340), (6, 3404450), (7, 2918100), (10, 2042670), (12, 1702225), (14, 1459050), (15, 1361780), (20, 1021335), (21, 972700), (25, 817068), (28, 729525), (30, 680890), (35, 583620), (42, 486350), (50, 408534), (60, 340445), (70, 291810), (71, 287700), (75, 272356), (84, 243175), (100, 204267), (105, 194540), (137, 149100), (140, 145905), (142, 143850), (150, 136178), (175, 116724), (210, 97270), (213, 95900), (274, 74550), (284, 71925), (300, 68089), (350, 58362), (355, 57540), (411, 49700), (420, 48635), (426, 47950), (497, 41100), (525, 38908), (548, 37275), (685, 29820), (700, 29181), (710, 28770), (822, 24850), (852, 23975), (959, 21300), (994, 20550), (1050, 19454), (1065, 19180), (1370, 14910), (1420, 14385), (1491, 13700), (1644, 12425), (1775, 11508), (1918, 10650), (1988, 10275), (2055, 9940), (2100, 9727), (2130, 9590), (2485, 8220), (2740, 7455), (2877, 7100), (2982, 6850), (3425, 5964), (3550, 5754), (3836, 5325), (4110, 4970), (4260, 4795)]