1280341600

素因数分解:

$2^5\times 5^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{643}}^1$

素因数の和:813

約数の個数: 144

約数和(自身を含む): 3320412480

約数和(自身を除く): 2040070880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 76, 80, 95, 100, 131, 152, 160, 190, 200, 262, 304, 380, 400, 475, 524, 608, 643, 655, 760, 800, 950, 1048, 1286, 1310, 1520, 1900, 2096, 2489, 2572, 2620, 3040, 3215, 3275, 3800, 4192, 4978, 5144, 5240, 6430, 6550, 7600, 9956, 10288, 10480, 12217, 12445, 12860, 13100, 15200, 16075, 19912, 20576, 20960, 24434, 24890, 25720, 26200, 32150, 39824, 48868, 49780, 51440, 52400, 61085, 62225, 64300, 79648, 84233, 97736, 99560, 102880, 104800, 122170, 124450, 128600, 168466, 195472, 199120, 244340, 248900, 257200, 305425, 336932, 390944, 398240, 421165, 488680, 497800, 514400, 610850, 673864, 842330, 977360, 995600, 1221700, 1347728, 1600427, 1684660, 1954720, 1991200, 2105825, 2443400, 2695456, 3200854, 3369320, 4211650, 4886800, 6401708, 6738640, 8002135, 8423300, 9773600, 12803416, 13477280, 16004270, 16846600, 25606832, 32008540, 33693200, 40010675, 51213664, 64017080, 67386400, 80021350, 128034160, 160042700, 256068320, 320085400, 640170800, 1280341600]

約数ペア:

[(1, 1280341600), (2, 640170800), (4, 320085400), (5, 256068320), (8, 160042700), (10, 128034160), (16, 80021350), (19, 67386400), (20, 64017080), (25, 51213664), (32, 40010675), (38, 33693200), (40, 32008540), (50, 25606832), (76, 16846600), (80, 16004270), (95, 13477280), (100, 12803416), (131, 9773600), (152, 8423300), (160, 8002135), (190, 6738640), (200, 6401708), (262, 4886800), (304, 4211650), (380, 3369320), (400, 3200854), (475, 2695456), (524, 2443400), (608, 2105825), (643, 1991200), (655, 1954720), (760, 1684660), (800, 1600427), (950, 1347728), (1048, 1221700), (1286, 995600), (1310, 977360), (1520, 842330), (1900, 673864), (2096, 610850), (2489, 514400), (2572, 497800), (2620, 488680), (3040, 421165), (3215, 398240), (3275, 390944), (3800, 336932), (4192, 305425), (4978, 257200), (5144, 248900), (5240, 244340), (6430, 199120), (6550, 195472), (7600, 168466), (9956, 128600), (10288, 124450), (10480, 122170), (12217, 104800), (12445, 102880), (12860, 99560), (13100, 97736), (15200, 84233), (16075, 79648), (19912, 64300), (20576, 62225), (20960, 61085), (24434, 52400), (24890, 51440), (25720, 49780), (26200, 48868), (32150, 39824)]