318709760

素因数分解:

$2^{13}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:313

約数の個数: 112

約数和(自身を含む): 792675072

約数和(自身を除く): 473965312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 251, 256, 310, 320, 496, 502, 512, 620, 640, 992, 1004, 1024, 1240, 1255, 1280, 1984, 2008, 2048, 2480, 2510, 2560, 3968, 4016, 4096, 4960, 5020, 5120, 7781, 7936, 8032, 8192, 9920, 10040, 10240, 15562, 15872, 16064, 19840, 20080, 20480, 31124, 31744, 32128, 38905, 39680, 40160, 40960, 62248, 63488, 64256, 77810, 79360, 80320, 124496, 126976, 128512, 155620, 158720, 160640, 248992, 253952, 257024, 311240, 317440, 321280, 497984, 514048, 622480, 634880, 642560, 995968, 1028096, 1244960, 1269760, 1285120, 1991936, 2056192, 2489920, 2570240, 3983872, 4979840, 5140480, 7967744, 9959680, 10280960, 15935488, 19919360, 31870976, 39838720, 63741952, 79677440, 159354880, 318709760]

約数ペア:

[(1, 318709760), (2, 159354880), (4, 79677440), (5, 63741952), (8, 39838720), (10, 31870976), (16, 19919360), (20, 15935488), (31, 10280960), (32, 9959680), (40, 7967744), (62, 5140480), (64, 4979840), (80, 3983872), (124, 2570240), (128, 2489920), (155, 2056192), (160, 1991936), (248, 1285120), (251, 1269760), (256, 1244960), (310, 1028096), (320, 995968), (496, 642560), (502, 634880), (512, 622480), (620, 514048), (640, 497984), (992, 321280), (1004, 317440), (1024, 311240), (1240, 257024), (1255, 253952), (1280, 248992), (1984, 160640), (2008, 158720), (2048, 155620), (2480, 128512), (2510, 126976), (2560, 124496), (3968, 80320), (4016, 79360), (4096, 77810), (4960, 64256), (5020, 63488), (5120, 62248), (7781, 40960), (7936, 40160), (8032, 39680), (8192, 38905), (9920, 32128), (10040, 31744), (10240, 31124), (15562, 20480), (15872, 20080), (16064, 19840)]