20151664

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:218

約数の個数: 80

約数和(自身を含む): 45934560

約数和(自身を除く): 25782896

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 41, 52, 68, 82, 104, 136, 139, 164, 208, 221, 272, 278, 328, 442, 533, 556, 656, 697, 884, 1066, 1112, 1394, 1768, 1807, 2132, 2224, 2363, 2788, 3536, 3614, 4264, 4726, 5576, 5699, 7228, 8528, 9061, 9452, 11152, 11398, 14456, 18122, 18904, 22796, 28912, 30719, 36244, 37808, 45592, 61438, 72488, 74087, 91184, 96883, 122876, 144976, 148174, 193766, 245752, 296348, 387532, 491504, 592696, 775064, 1185392, 1259479, 1550128, 2518958, 5037916, 10075832, 20151664]

約数ペア:

[(1, 20151664), (2, 10075832), (4, 5037916), (8, 2518958), (13, 1550128), (16, 1259479), (17, 1185392), (26, 775064), (34, 592696), (41, 491504), (52, 387532), (68, 296348), (82, 245752), (104, 193766), (136, 148174), (139, 144976), (164, 122876), (208, 96883), (221, 91184), (272, 74087), (278, 72488), (328, 61438), (442, 45592), (533, 37808), (556, 36244), (656, 30719), (697, 28912), (884, 22796), (1066, 18904), (1112, 18122), (1394, 14456), (1768, 11398), (1807, 11152), (2132, 9452), (2224, 9061), (2363, 8528), (2788, 7228), (3536, 5699), (3614, 5576), (4264, 4726)]