20792320

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:187

約数の個数: 88

約数和(自身を含む): 51879168

約数和(自身を除く): 31086848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 131, 155, 160, 248, 256, 262, 310, 320, 496, 512, 524, 620, 640, 655, 992, 1024, 1048, 1240, 1280, 1310, 1984, 2096, 2480, 2560, 2620, 3968, 4061, 4192, 4960, 5120, 5240, 7936, 8122, 8384, 9920, 10480, 15872, 16244, 16768, 19840, 20305, 20960, 31744, 32488, 33536, 39680, 40610, 41920, 64976, 67072, 79360, 81220, 83840, 129952, 134144, 158720, 162440, 167680, 259904, 324880, 335360, 519808, 649760, 670720, 1039616, 1299520, 2079232, 2599040, 4158464, 5198080, 10396160, 20792320]

約数ペア:

[(1, 20792320), (2, 10396160), (4, 5198080), (5, 4158464), (8, 2599040), (10, 2079232), (16, 1299520), (20, 1039616), (31, 670720), (32, 649760), (40, 519808), (62, 335360), (64, 324880), (80, 259904), (124, 167680), (128, 162440), (131, 158720), (155, 134144), (160, 129952), (248, 83840), (256, 81220), (262, 79360), (310, 67072), (320, 64976), (496, 41920), (512, 40610), (524, 39680), (620, 33536), (640, 32488), (655, 31744), (992, 20960), (1024, 20305), (1048, 19840), (1240, 16768), (1280, 16244), (1310, 15872), (1984, 10480), (2096, 9920), (2480, 8384), (2560, 8122), (2620, 7936), (3968, 5240), (4061, 5120), (4192, 4960)]