21041930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1217}}^1$

素因数の和:1263

約数の個数: 64

約数和(自身を含む): 49109760

約数和(自身を除く): 28067830

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 26, 35, 38, 65, 70, 91, 95, 130, 133, 182, 190, 247, 266, 455, 494, 665, 910, 1217, 1235, 1330, 1729, 2434, 2470, 3458, 6085, 8519, 8645, 12170, 15821, 17038, 17290, 23123, 31642, 42595, 46246, 79105, 85190, 110747, 115615, 158210, 161861, 221494, 231230, 300599, 323722, 553735, 601198, 809305, 1107470, 1502995, 1618610, 2104193, 3005990, 4208386, 10520965, 21041930]

約数ペア:

[(1, 21041930), (2, 10520965), (5, 4208386), (7, 3005990), (10, 2104193), (13, 1618610), (14, 1502995), (19, 1107470), (26, 809305), (35, 601198), (38, 553735), (65, 323722), (70, 300599), (91, 231230), (95, 221494), (130, 161861), (133, 158210), (182, 115615), (190, 110747), (247, 85190), (266, 79105), (455, 46246), (494, 42595), (665, 31642), (910, 23123), (1217, 17290), (1235, 17038), (1330, 15821), (1729, 12170), (2434, 8645), (2470, 8519), (3458, 6085)]