40438520

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:348

約数の個数: 64

約数和(自身を含む): 94003200

約数和(自身を除く): 53564680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 79, 134, 158, 191, 268, 316, 335, 382, 395, 536, 632, 670, 764, 790, 955, 1340, 1528, 1580, 1910, 2680, 3160, 3820, 5293, 7640, 10586, 12797, 15089, 21172, 25594, 26465, 30178, 42344, 51188, 52930, 60356, 63985, 75445, 102376, 105860, 120712, 127970, 150890, 211720, 255940, 301780, 511880, 603560, 1010963, 2021926, 4043852, 5054815, 8087704, 10109630, 20219260, 40438520]

約数ペア:

[(1, 40438520), (2, 20219260), (4, 10109630), (5, 8087704), (8, 5054815), (10, 4043852), (20, 2021926), (40, 1010963), (67, 603560), (79, 511880), (134, 301780), (158, 255940), (191, 211720), (268, 150890), (316, 127970), (335, 120712), (382, 105860), (395, 102376), (536, 75445), (632, 63985), (670, 60356), (764, 52930), (790, 51188), (955, 42344), (1340, 30178), (1528, 26465), (1580, 25594), (1910, 21172), (2680, 15089), (3160, 12797), (3820, 10586), (5293, 7640)]