18743601920

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{472369}}^1$

素因数の和:472421

約数の個数: 72

約数和(自身を含む): 46345165440

約数和(自身を除く): 27601563520

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, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9920, 19840, 39680, 472369, 944738, 1889476, 2361845, 3778952, 4723690, 7557904, 9447380, 14643439, 15115808, 18894760, 29286878, 30231616, 37789520, 58573756, 60463232, 73217195, 75579040, 117147512, 120926464, 146434390, 151158080, 234295024, 292868780, 302316160, 468590048, 585737560, 604632320, 937180096, 1171475120, 1874360192, 2342950240, 3748720384, 4685900480, 9371800960, 18743601920]

約数ペア:

[(1, 18743601920), (2, 9371800960), (4, 4685900480), (5, 3748720384), (8, 2342950240), (10, 1874360192), (16, 1171475120), (20, 937180096), (31, 604632320), (32, 585737560), (40, 468590048), (62, 302316160), (64, 292868780), (80, 234295024), (124, 151158080), (128, 146434390), (155, 120926464), (160, 117147512), (248, 75579040), (256, 73217195), (310, 60463232), (320, 58573756), (496, 37789520), (620, 30231616), (640, 29286878), (992, 18894760), (1240, 15115808), (1280, 14643439), (1984, 9447380), (2480, 7557904), (3968, 4723690), (4960, 3778952), (7936, 2361845), (9920, 1889476), (19840, 944738), (39680, 472369)]