20316160

素因数分解:

$2^{17}\times 5^1\times {\mathrm{31}}^1$

素因数の和:70

約数の個数: 72

約数和(自身を含む): 50331456

約数和(自身を除く): 30015296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1024, 1240, 1280, 1984, 2048, 2480, 2560, 3968, 4096, 4960, 5120, 7936, 8192, 9920, 10240, 15872, 16384, 19840, 20480, 31744, 32768, 39680, 40960, 63488, 65536, 79360, 81920, 126976, 131072, 158720, 163840, 253952, 317440, 327680, 507904, 634880, 655360, 1015808, 1269760, 2031616, 2539520, 4063232, 5079040, 10158080, 20316160]

約数ペア:

[(1, 20316160), (2, 10158080), (4, 5079040), (5, 4063232), (8, 2539520), (10, 2031616), (16, 1269760), (20, 1015808), (31, 655360), (32, 634880), (40, 507904), (62, 327680), (64, 317440), (80, 253952), (124, 163840), (128, 158720), (155, 131072), (160, 126976), (248, 81920), (256, 79360), (310, 65536), (320, 63488), (496, 40960), (512, 39680), (620, 32768), (640, 31744), (992, 20480), (1024, 19840), (1240, 16384), (1280, 15872), (1984, 10240), (2048, 9920), (2480, 8192), (2560, 7936), (3968, 5120), (4096, 4960)]