79366640

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:330

約数の個数: 80

約数和(自身を含む): 190434240

約数和(自身を除く): 111067600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 89, 142, 157, 178, 284, 314, 355, 356, 445, 568, 628, 710, 712, 785, 890, 1136, 1256, 1420, 1424, 1570, 1780, 2512, 2840, 3140, 3560, 5680, 6280, 6319, 7120, 11147, 12560, 12638, 13973, 22294, 25276, 27946, 31595, 44588, 50552, 55735, 55892, 63190, 69865, 89176, 101104, 111470, 111784, 126380, 139730, 178352, 222940, 223568, 252760, 279460, 445880, 505520, 558920, 891760, 992083, 1117840, 1984166, 3968332, 4960415, 7936664, 9920830, 15873328, 19841660, 39683320, 79366640]

約数ペア:

[(1, 79366640), (2, 39683320), (4, 19841660), (5, 15873328), (8, 9920830), (10, 7936664), (16, 4960415), (20, 3968332), (40, 1984166), (71, 1117840), (80, 992083), (89, 891760), (142, 558920), (157, 505520), (178, 445880), (284, 279460), (314, 252760), (355, 223568), (356, 222940), (445, 178352), (568, 139730), (628, 126380), (710, 111784), (712, 111470), (785, 101104), (890, 89176), (1136, 69865), (1256, 63190), (1420, 55892), (1424, 55735), (1570, 50552), (1780, 44588), (2512, 31595), (2840, 27946), (3140, 25276), (3560, 22294), (5680, 13973), (6280, 12638), (6319, 12560), (7120, 11147)]