81952220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{821}}^1$

素因数の和:891

約数の個数: 96

約数和(自身を含む): 212115456

約数和(自身を除く): 130163236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 31, 35, 46, 62, 70, 92, 115, 124, 140, 155, 161, 217, 230, 310, 322, 434, 460, 620, 644, 713, 805, 821, 868, 1085, 1426, 1610, 1642, 2170, 2852, 3220, 3284, 3565, 4105, 4340, 4991, 5747, 7130, 8210, 9982, 11494, 14260, 16420, 18883, 19964, 22988, 24955, 25451, 28735, 37766, 49910, 50902, 57470, 75532, 94415, 99820, 101804, 114940, 127255, 132181, 178157, 188830, 254510, 264362, 356314, 377660, 509020, 528724, 585373, 660905, 712628, 890785, 1170746, 1321810, 1781570, 2341492, 2643620, 2926865, 3563140, 4097611, 5853730, 8195222, 11707460, 16390444, 20488055, 40976110, 81952220]

約数ペア:

[(1, 81952220), (2, 40976110), (4, 20488055), (5, 16390444), (7, 11707460), (10, 8195222), (14, 5853730), (20, 4097611), (23, 3563140), (28, 2926865), (31, 2643620), (35, 2341492), (46, 1781570), (62, 1321810), (70, 1170746), (92, 890785), (115, 712628), (124, 660905), (140, 585373), (155, 528724), (161, 509020), (217, 377660), (230, 356314), (310, 264362), (322, 254510), (434, 188830), (460, 178157), (620, 132181), (644, 127255), (713, 114940), (805, 101804), (821, 99820), (868, 94415), (1085, 75532), (1426, 57470), (1610, 50902), (1642, 49910), (2170, 37766), (2852, 28735), (3220, 25451), (3284, 24955), (3565, 22988), (4105, 19964), (4340, 18883), (4991, 16420), (5747, 14260), (7130, 11494), (8210, 9982)]