408266680

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{1997}}^1$

素因数の和:2296

約数の個数: 64

約数和(自身を含む): 971028000

約数和(自身を除く): 562761320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 269, 380, 538, 760, 1076, 1345, 1997, 2152, 2690, 3994, 5111, 5380, 7988, 9985, 10222, 10760, 15976, 19970, 20444, 25555, 37943, 39940, 40888, 51110, 75886, 79880, 102220, 151772, 189715, 204440, 303544, 379430, 537193, 758860, 1074386, 1517720, 2148772, 2685965, 4297544, 5371930, 10206667, 10743860, 20413334, 21487720, 40826668, 51033335, 81653336, 102066670, 204133340, 408266680]

約数ペア:

[(1, 408266680), (2, 204133340), (4, 102066670), (5, 81653336), (8, 51033335), (10, 40826668), (19, 21487720), (20, 20413334), (38, 10743860), (40, 10206667), (76, 5371930), (95, 4297544), (152, 2685965), (190, 2148772), (269, 1517720), (380, 1074386), (538, 758860), (760, 537193), (1076, 379430), (1345, 303544), (1997, 204440), (2152, 189715), (2690, 151772), (3994, 102220), (5111, 79880), (5380, 75886), (7988, 51110), (9985, 40888), (10222, 39940), (10760, 37943), (15976, 25555), (19970, 20444)]