20005804

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:155

約数の個数: 96

約数和(自身を含む): 47246976

約数和(自身を除く): 27241172

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 52, 53, 61, 68, 91, 106, 119, 122, 182, 212, 221, 238, 244, 364, 371, 427, 442, 476, 689, 742, 793, 854, 884, 901, 1037, 1378, 1484, 1547, 1586, 1708, 1802, 2074, 2756, 3094, 3172, 3233, 3604, 4148, 4823, 5551, 6188, 6307, 6466, 7259, 9646, 11102, 11713, 12614, 12932, 13481, 14518, 19292, 22204, 22631, 23426, 25228, 26962, 29036, 42029, 45262, 46852, 53924, 54961, 81991, 84058, 90524, 94367, 109922, 163982, 168116, 188734, 219844, 294203, 327964, 377468, 384727, 588406, 714493, 769454, 1176812, 1428986, 1538908, 2857972, 5001451, 10002902, 20005804]

約数ペア:

[(1, 20005804), (2, 10002902), (4, 5001451), (7, 2857972), (13, 1538908), (14, 1428986), (17, 1176812), (26, 769454), (28, 714493), (34, 588406), (52, 384727), (53, 377468), (61, 327964), (68, 294203), (91, 219844), (106, 188734), (119, 168116), (122, 163982), (182, 109922), (212, 94367), (221, 90524), (238, 84058), (244, 81991), (364, 54961), (371, 53924), (427, 46852), (442, 45262), (476, 42029), (689, 29036), (742, 26962), (793, 25228), (854, 23426), (884, 22631), (901, 22204), (1037, 19292), (1378, 14518), (1484, 13481), (1547, 12932), (1586, 12614), (1708, 11713), (1802, 11102), (2074, 9646), (2756, 7259), (3094, 6466), (3172, 6307), (3233, 6188), (3604, 5551), (4148, 4823)]