20329316

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:193

約数の個数: 72

約数和(自身を含む): 44815680

約数和(自身を除く): 24486364

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 53, 76, 98, 103, 106, 133, 196, 206, 212, 266, 371, 412, 532, 721, 742, 931, 1007, 1442, 1484, 1862, 1957, 2014, 2597, 2884, 3724, 3914, 4028, 5047, 5194, 5459, 7049, 7828, 10094, 10388, 10918, 13699, 14098, 20188, 21836, 27398, 28196, 38213, 49343, 54796, 76426, 95893, 98686, 103721, 152852, 191786, 197372, 207442, 267491, 383572, 414884, 534982, 726047, 1069964, 1452094, 2904188, 5082329, 10164658, 20329316]

約数ペア:

[(1, 20329316), (2, 10164658), (4, 5082329), (7, 2904188), (14, 1452094), (19, 1069964), (28, 726047), (38, 534982), (49, 414884), (53, 383572), (76, 267491), (98, 207442), (103, 197372), (106, 191786), (133, 152852), (196, 103721), (206, 98686), (212, 95893), (266, 76426), (371, 54796), (412, 49343), (532, 38213), (721, 28196), (742, 27398), (931, 21836), (1007, 20188), (1442, 14098), (1484, 13699), (1862, 10918), (1957, 10388), (2014, 10094), (2597, 7828), (2884, 7049), (3724, 5459), (3914, 5194), (4028, 5047)]