19447480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{251}}^1$

素因数の和:424

約数の個数: 64

約数和(自身を含む): 47628000

約数和(自身を除く): 28180520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 149, 251, 260, 298, 502, 520, 596, 745, 1004, 1192, 1255, 1490, 1937, 2008, 2510, 2980, 3263, 3874, 5020, 5960, 6526, 7748, 9685, 10040, 13052, 15496, 16315, 19370, 26104, 32630, 37399, 38740, 65260, 74798, 77480, 130520, 149596, 186995, 299192, 373990, 486187, 747980, 972374, 1495960, 1944748, 2430935, 3889496, 4861870, 9723740, 19447480]

約数ペア:

[(1, 19447480), (2, 9723740), (4, 4861870), (5, 3889496), (8, 2430935), (10, 1944748), (13, 1495960), (20, 972374), (26, 747980), (40, 486187), (52, 373990), (65, 299192), (104, 186995), (130, 149596), (149, 130520), (251, 77480), (260, 74798), (298, 65260), (502, 38740), (520, 37399), (596, 32630), (745, 26104), (1004, 19370), (1192, 16315), (1255, 15496), (1490, 13052), (1937, 10040), (2008, 9685), (2510, 7748), (2980, 6526), (3263, 5960), (3874, 5020)]