20157172

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:145

約数の個数: 72

約数和(自身を含む): 44561664

約数和(自身を除く): 24404492

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 47, 53, 68, 94, 106, 119, 188, 212, 238, 289, 329, 371, 476, 578, 658, 742, 799, 901, 1156, 1316, 1484, 1598, 1802, 2023, 2491, 3196, 3604, 4046, 4982, 5593, 6307, 8092, 9964, 11186, 12614, 13583, 15317, 17437, 22372, 25228, 27166, 30634, 34874, 42347, 54332, 61268, 69748, 84694, 95081, 107219, 169388, 190162, 214438, 296429, 380324, 428876, 592858, 719899, 1185716, 1439798, 2879596, 5039293, 10078586, 20157172]

約数ペア:

[(1, 20157172), (2, 10078586), (4, 5039293), (7, 2879596), (14, 1439798), (17, 1185716), (28, 719899), (34, 592858), (47, 428876), (53, 380324), (68, 296429), (94, 214438), (106, 190162), (119, 169388), (188, 107219), (212, 95081), (238, 84694), (289, 69748), (329, 61268), (371, 54332), (476, 42347), (578, 34874), (658, 30634), (742, 27166), (799, 25228), (901, 22372), (1156, 17437), (1316, 15317), (1484, 13583), (1598, 12614), (1802, 11186), (2023, 9964), (2491, 8092), (3196, 6307), (3604, 5593), (4046, 4982)]