320401900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:428

約数の個数: 144

約数和(自身を含む): 865319616

約数和(自身を除く): 544917716

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 137, 140, 175, 182, 257, 260, 274, 325, 350, 364, 455, 514, 548, 650, 685, 700, 910, 959, 1028, 1285, 1300, 1370, 1781, 1799, 1820, 1918, 2275, 2570, 2740, 3341, 3425, 3562, 3598, 3836, 4550, 4795, 5140, 6425, 6682, 6850, 7124, 7196, 8905, 8995, 9100, 9590, 12467, 12850, 13364, 13700, 16705, 17810, 17990, 19180, 23387, 23975, 24934, 25700, 33410, 35209, 35620, 35980, 44525, 44975, 46774, 47950, 49868, 62335, 66820, 70418, 83525, 89050, 89950, 93548, 95900, 116935, 124670, 140836, 167050, 176045, 178100, 179900, 233870, 246463, 249340, 311675, 334100, 352090, 457717, 467740, 492926, 584675, 623350, 704180, 880225, 915434, 985852, 1169350, 1232315, 1246700, 1760450, 1830868, 2288585, 2338700, 2464630, 3204019, 3520900, 4577170, 4929260, 6161575, 6408038, 9154340, 11442925, 12323150, 12816076, 16020095, 22885850, 24646300, 32040190, 45771700, 64080380, 80100475, 160200950, 320401900]

約数ペア:

[(1, 320401900), (2, 160200950), (4, 80100475), (5, 64080380), (7, 45771700), (10, 32040190), (13, 24646300), (14, 22885850), (20, 16020095), (25, 12816076), (26, 12323150), (28, 11442925), (35, 9154340), (50, 6408038), (52, 6161575), (65, 4929260), (70, 4577170), (91, 3520900), (100, 3204019), (130, 2464630), (137, 2338700), (140, 2288585), (175, 1830868), (182, 1760450), (257, 1246700), (260, 1232315), (274, 1169350), (325, 985852), (350, 915434), (364, 880225), (455, 704180), (514, 623350), (548, 584675), (650, 492926), (685, 467740), (700, 457717), (910, 352090), (959, 334100), (1028, 311675), (1285, 249340), (1300, 246463), (1370, 233870), (1781, 179900), (1799, 178100), (1820, 176045), (1918, 167050), (2275, 140836), (2570, 124670), (2740, 116935), (3341, 95900), (3425, 93548), (3562, 89950), (3598, 89050), (3836, 83525), (4550, 70418), (4795, 66820), (5140, 62335), (6425, 49868), (6682, 47950), (6850, 46774), (7124, 44975), (7196, 44525), (8905, 35980), (8995, 35620), (9100, 35209), (9590, 33410), (12467, 25700), (12850, 24934), (13364, 23975), (13700, 23387), (16705, 19180), (17810, 17990)]