20609984

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{997}}^1$

素因数の和:1045

約数の個数: 56

約数和(自身を含む): 45628560

約数和(自身を除く): 25018576

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 64, 68, 76, 136, 152, 272, 304, 323, 544, 608, 646, 997, 1088, 1216, 1292, 1994, 2584, 3988, 5168, 7976, 10336, 15952, 16949, 18943, 20672, 31904, 33898, 37886, 63808, 67796, 75772, 135592, 151544, 271184, 303088, 322031, 542368, 606176, 644062, 1084736, 1212352, 1288124, 2576248, 5152496, 10304992, 20609984]

約数ペア:

[(1, 20609984), (2, 10304992), (4, 5152496), (8, 2576248), (16, 1288124), (17, 1212352), (19, 1084736), (32, 644062), (34, 606176), (38, 542368), (64, 322031), (68, 303088), (76, 271184), (136, 151544), (152, 135592), (272, 75772), (304, 67796), (323, 63808), (544, 37886), (608, 33898), (646, 31904), (997, 20672), (1088, 18943), (1216, 16949), (1292, 15952), (1994, 10336), (2584, 7976), (3988, 5168)]