205222480

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{997}}^1$

素因数の和:1124

約数の個数: 80

約数和(自身を含む): 498968064

約数和(自身を除く): 293745584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 83, 124, 155, 166, 248, 310, 332, 415, 496, 620, 664, 830, 997, 1240, 1328, 1660, 1994, 2480, 2573, 3320, 3988, 4985, 5146, 6640, 7976, 9970, 10292, 12865, 15952, 19940, 20584, 25730, 30907, 39880, 41168, 51460, 61814, 79760, 82751, 102920, 123628, 154535, 165502, 205840, 247256, 309070, 331004, 413755, 494512, 618140, 662008, 827510, 1236280, 1324016, 1655020, 2472560, 2565281, 3310040, 5130562, 6620080, 10261124, 12826405, 20522248, 25652810, 41044496, 51305620, 102611240, 205222480]

約数ペア:

[(1, 205222480), (2, 102611240), (4, 51305620), (5, 41044496), (8, 25652810), (10, 20522248), (16, 12826405), (20, 10261124), (31, 6620080), (40, 5130562), (62, 3310040), (80, 2565281), (83, 2472560), (124, 1655020), (155, 1324016), (166, 1236280), (248, 827510), (310, 662008), (332, 618140), (415, 494512), (496, 413755), (620, 331004), (664, 309070), (830, 247256), (997, 205840), (1240, 165502), (1328, 154535), (1660, 123628), (1994, 102920), (2480, 82751), (2573, 79760), (3320, 61814), (3988, 51460), (4985, 41168), (5146, 39880), (6640, 30907), (7976, 25730), (9970, 20584), (10292, 19940), (12865, 15952)]