20538492

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{137}}^1$

素因数の和:219

約数の個数: 72

約数和(自身を含む): 53717328

約数和(自身を除く): 33178836

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 62, 78, 93, 124, 137, 156, 186, 274, 372, 403, 411, 548, 806, 822, 961, 1209, 1612, 1644, 1781, 1922, 2418, 2883, 3562, 3844, 4247, 4836, 5343, 5766, 7124, 8494, 10686, 11532, 12493, 12741, 16988, 21372, 24986, 25482, 37479, 49972, 50964, 55211, 74958, 110422, 131657, 149916, 165633, 220844, 263314, 331266, 394971, 526628, 662532, 789942, 1579884, 1711541, 3423082, 5134623, 6846164, 10269246, 20538492]

約数ペア:

[(1, 20538492), (2, 10269246), (3, 6846164), (4, 5134623), (6, 3423082), (12, 1711541), (13, 1579884), (26, 789942), (31, 662532), (39, 526628), (52, 394971), (62, 331266), (78, 263314), (93, 220844), (124, 165633), (137, 149916), (156, 131657), (186, 110422), (274, 74958), (372, 55211), (403, 50964), (411, 49972), (548, 37479), (806, 25482), (822, 24986), (961, 21372), (1209, 16988), (1612, 12741), (1644, 12493), (1781, 11532), (1922, 10686), (2418, 8494), (2883, 7124), (3562, 5766), (3844, 5343), (4247, 4836)]