405699680

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^2\times {\mathrm{503}}^1$

素因数の和:660

約数の個数: 72

約数和(自身を含む): 974087856

約数和(自身を除く): 568388176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 503, 568, 710, 1006, 1136, 1420, 2012, 2272, 2515, 2840, 4024, 5030, 5041, 5680, 8048, 10060, 10082, 11360, 16096, 20120, 20164, 25205, 35713, 40240, 40328, 50410, 71426, 80480, 80656, 100820, 142852, 161312, 178565, 201640, 285704, 357130, 403280, 571408, 714260, 806560, 1142816, 1428520, 2535623, 2857040, 5071246, 5714080, 10142492, 12678115, 20284984, 25356230, 40569968, 50712460, 81139936, 101424920, 202849840, 405699680]

約数ペア:

[(1, 405699680), (2, 202849840), (4, 101424920), (5, 81139936), (8, 50712460), (10, 40569968), (16, 25356230), (20, 20284984), (32, 12678115), (40, 10142492), (71, 5714080), (80, 5071246), (142, 2857040), (160, 2535623), (284, 1428520), (355, 1142816), (503, 806560), (568, 714260), (710, 571408), (1006, 403280), (1136, 357130), (1420, 285704), (2012, 201640), (2272, 178565), (2515, 161312), (2840, 142852), (4024, 100820), (5030, 80656), (5041, 80480), (5680, 71426), (8048, 50410), (10060, 40328), (10082, 40240), (11360, 35713), (16096, 25205), (20120, 20164)]