81371835

素因数分解:

$3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 144926496

約数和(自身を除く): 63554661

約数列:

[1, 3, 5, 9, 15, 45, 67, 137, 197, 201, 335, 411, 591, 603, 685, 985, 1005, 1233, 1773, 2055, 2955, 3015, 6165, 8865, 9179, 13199, 26989, 27537, 39597, 45895, 65995, 80967, 82611, 118791, 134945, 137685, 197985, 242901, 404835, 413055, 593955, 1214505, 1808263, 5424789, 9041315, 16274367, 27123945, 81371835]

約数ペア:

[(1, 81371835), (3, 27123945), (5, 16274367), (9, 9041315), (15, 5424789), (45, 1808263), (67, 1214505), (137, 593955), (197, 413055), (201, 404835), (335, 242901), (411, 197985), (591, 137685), (603, 134945), (685, 118791), (985, 82611), (1005, 80967), (1233, 65995), (1773, 45895), (2055, 39597), (2955, 27537), (3015, 26989), (6165, 13199), (8865, 9179)]