388789600

素因数分解:

$2^5\times 5^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:369

約数の個数: 144

約数和(自身を含む): 999686016

約数和(自身を除く): 610896416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 61, 62, 80, 100, 122, 124, 155, 160, 200, 244, 248, 257, 305, 310, 400, 488, 496, 514, 610, 620, 775, 800, 976, 992, 1028, 1220, 1240, 1285, 1525, 1550, 1891, 1952, 2056, 2440, 2480, 2570, 3050, 3100, 3782, 4112, 4880, 4960, 5140, 6100, 6200, 6425, 7564, 7967, 8224, 9455, 9760, 10280, 12200, 12400, 12850, 15128, 15677, 15934, 18910, 20560, 24400, 24800, 25700, 30256, 31354, 31868, 37820, 39835, 41120, 47275, 48800, 51400, 60512, 62708, 63736, 75640, 78385, 79670, 94550, 102800, 125416, 127472, 151280, 156770, 159340, 189100, 199175, 205600, 250832, 254944, 302560, 313540, 318680, 378200, 391925, 398350, 485987, 501664, 627080, 637360, 756400, 783850, 796700, 971974, 1254160, 1274720, 1512800, 1567700, 1593400, 1943948, 2429935, 2508320, 3135400, 3186800, 3887896, 4859870, 6270800, 6373600, 7775792, 9719740, 12149675, 12541600, 15551584, 19439480, 24299350, 38878960, 48598700, 77757920, 97197400, 194394800, 388789600]

約数ペア:

[(1, 388789600), (2, 194394800), (4, 97197400), (5, 77757920), (8, 48598700), (10, 38878960), (16, 24299350), (20, 19439480), (25, 15551584), (31, 12541600), (32, 12149675), (40, 9719740), (50, 7775792), (61, 6373600), (62, 6270800), (80, 4859870), (100, 3887896), (122, 3186800), (124, 3135400), (155, 2508320), (160, 2429935), (200, 1943948), (244, 1593400), (248, 1567700), (257, 1512800), (305, 1274720), (310, 1254160), (400, 971974), (488, 796700), (496, 783850), (514, 756400), (610, 637360), (620, 627080), (775, 501664), (800, 485987), (976, 398350), (992, 391925), (1028, 378200), (1220, 318680), (1240, 313540), (1285, 302560), (1525, 254944), (1550, 250832), (1891, 205600), (1952, 199175), (2056, 189100), (2440, 159340), (2480, 156770), (2570, 151280), (3050, 127472), (3100, 125416), (3782, 102800), (4112, 94550), (4880, 79670), (4960, 78385), (5140, 75640), (6100, 63736), (6200, 62708), (6425, 60512), (7564, 51400), (7967, 48800), (8224, 47275), (9455, 41120), (9760, 39835), (10280, 37820), (12200, 31868), (12400, 31354), (12850, 30256), (15128, 25700), (15677, 24800), (15934, 24400), (18910, 20560)]