20345520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6521}}^1$

素因数の和:6550

約数の個数: 80

約数和(自身を含む): 67933152

約数和(自身を除く): 47587632

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6521, 13042, 19563, 26084, 32605, 39126, 52168, 65210, 78252, 84773, 97815, 104336, 130420, 156504, 169546, 195630, 254319, 260840, 313008, 339092, 391260, 423865, 508638, 521680, 678184, 782520, 847730, 1017276, 1271595, 1356368, 1565040, 1695460, 2034552, 2543190, 3390920, 4069104, 5086380, 6781840, 10172760, 20345520]

約数ペア:

[(1, 20345520), (2, 10172760), (3, 6781840), (4, 5086380), (5, 4069104), (6, 3390920), (8, 2543190), (10, 2034552), (12, 1695460), (13, 1565040), (15, 1356368), (16, 1271595), (20, 1017276), (24, 847730), (26, 782520), (30, 678184), (39, 521680), (40, 508638), (48, 423865), (52, 391260), (60, 339092), (65, 313008), (78, 260840), (80, 254319), (104, 195630), (120, 169546), (130, 156504), (156, 130420), (195, 104336), (208, 97815), (240, 84773), (260, 78252), (312, 65210), (390, 52168), (520, 39126), (624, 32605), (780, 26084), (1040, 19563), (1560, 13042), (3120, 6521)]