20734624

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{509}}^1$

素因数の和:605

約数の個数: 48

約数和(自身を含む): 43696800

約数和(自身を除く): 22962176

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 67, 76, 134, 152, 268, 304, 509, 536, 608, 1018, 1072, 1273, 2036, 2144, 2546, 4072, 5092, 8144, 9671, 10184, 16288, 19342, 20368, 34103, 38684, 40736, 68206, 77368, 136412, 154736, 272824, 309472, 545648, 647957, 1091296, 1295914, 2591828, 5183656, 10367312, 20734624]

約数ペア:

[(1, 20734624), (2, 10367312), (4, 5183656), (8, 2591828), (16, 1295914), (19, 1091296), (32, 647957), (38, 545648), (67, 309472), (76, 272824), (134, 154736), (152, 136412), (268, 77368), (304, 68206), (509, 40736), (536, 38684), (608, 34103), (1018, 20368), (1072, 19342), (1273, 16288), (2036, 10184), (2144, 9671), (2546, 8144), (4072, 5092)]