20885520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5119}}^1$

素因数の和:5152

約数の個数: 80

約数和(自身を含む): 68567040

約数和(自身を除く): 47681520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 5119, 10238, 15357, 20476, 25595, 30714, 40952, 51190, 61428, 76785, 81904, 87023, 102380, 122856, 153570, 174046, 204760, 245712, 261069, 307140, 348092, 409520, 435115, 522138, 614280, 696184, 870230, 1044276, 1228560, 1305345, 1392368, 1740460, 2088552, 2610690, 3480920, 4177104, 5221380, 6961840, 10442760, 20885520]

約数ペア:

[(1, 20885520), (2, 10442760), (3, 6961840), (4, 5221380), (5, 4177104), (6, 3480920), (8, 2610690), (10, 2088552), (12, 1740460), (15, 1392368), (16, 1305345), (17, 1228560), (20, 1044276), (24, 870230), (30, 696184), (34, 614280), (40, 522138), (48, 435115), (51, 409520), (60, 348092), (68, 307140), (80, 261069), (85, 245712), (102, 204760), (120, 174046), (136, 153570), (170, 122856), (204, 102380), (240, 87023), (255, 81904), (272, 76785), (340, 61428), (408, 51190), (510, 40952), (680, 30714), (816, 25595), (1020, 20476), (1360, 15357), (2040, 10238), (4080, 5119)]