20048931

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:161

約数の個数: 64

約数和(自身を含む): 36188160

約数和(自身を除く): 16139229

約数列:

[1, 3, 7, 9, 21, 27, 37, 47, 61, 63, 111, 141, 183, 189, 259, 329, 333, 423, 427, 549, 777, 987, 999, 1269, 1281, 1647, 1739, 2257, 2331, 2867, 2961, 3843, 5217, 6771, 6993, 8601, 8883, 11529, 12173, 15651, 15799, 20069, 20313, 25803, 36519, 46953, 47397, 60207, 60939, 77409, 106079, 109557, 142191, 180621, 318237, 328671, 426573, 541863, 742553, 954711, 2227659, 2864133, 6682977, 20048931]

約数ペア:

[(1, 20048931), (3, 6682977), (7, 2864133), (9, 2227659), (21, 954711), (27, 742553), (37, 541863), (47, 426573), (61, 328671), (63, 318237), (111, 180621), (141, 142191), (183, 109557), (189, 106079), (259, 77409), (329, 60939), (333, 60207), (423, 47397), (427, 46953), (549, 36519), (777, 25803), (987, 20313), (999, 20069), (1269, 15799), (1281, 15651), (1647, 12173), (1739, 11529), (2257, 8883), (2331, 8601), (2867, 6993), (2961, 6771), (3843, 5217)]