20321392

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{821}}^1$

素因数の和:866

約数の個数: 80

約数和(自身を含む): 51371712

約数和(自身を除く): 31050320

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 17, 26, 28, 34, 52, 56, 68, 91, 104, 112, 119, 136, 182, 208, 221, 238, 272, 364, 442, 476, 728, 821, 884, 952, 1456, 1547, 1642, 1768, 1904, 3094, 3284, 3536, 5747, 6188, 6568, 10673, 11494, 12376, 13136, 13957, 21346, 22988, 24752, 27914, 42692, 45976, 55828, 74711, 85384, 91952, 97699, 111656, 149422, 170768, 181441, 195398, 223312, 298844, 362882, 390796, 597688, 725764, 781592, 1195376, 1270087, 1451528, 1563184, 2540174, 2903056, 5080348, 10160696, 20321392]

約数ペア:

[(1, 20321392), (2, 10160696), (4, 5080348), (7, 2903056), (8, 2540174), (13, 1563184), (14, 1451528), (16, 1270087), (17, 1195376), (26, 781592), (28, 725764), (34, 597688), (52, 390796), (56, 362882), (68, 298844), (91, 223312), (104, 195398), (112, 181441), (119, 170768), (136, 149422), (182, 111656), (208, 97699), (221, 91952), (238, 85384), (272, 74711), (364, 55828), (442, 45976), (476, 42692), (728, 27914), (821, 24752), (884, 22988), (952, 21346), (1456, 13957), (1547, 13136), (1642, 12376), (1768, 11494), (1904, 10673), (3094, 6568), (3284, 6188), (3536, 5747)]