21180456

素因数分解:

$2^3\times 3^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{569}}^1$

素因数の和:639

約数の個数: 96

約数和(自身を含む): 64022400

約数和(自身を除く): 42841944

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 33, 36, 44, 47, 66, 72, 88, 94, 99, 132, 141, 188, 198, 264, 282, 376, 396, 423, 517, 564, 569, 792, 846, 1034, 1128, 1138, 1551, 1692, 1707, 2068, 2276, 3102, 3384, 3414, 4136, 4552, 4653, 5121, 6204, 6259, 6828, 9306, 10242, 12408, 12518, 13656, 18612, 18777, 20484, 25036, 26743, 37224, 37554, 40968, 50072, 53486, 56331, 75108, 80229, 106972, 112662, 150216, 160458, 213944, 225324, 240687, 294173, 320916, 450648, 481374, 588346, 641832, 882519, 962748, 1176692, 1765038, 1925496, 2353384, 2647557, 3530076, 5295114, 7060152, 10590228, 21180456]

約数ペア:

[(1, 21180456), (2, 10590228), (3, 7060152), (4, 5295114), (6, 3530076), (8, 2647557), (9, 2353384), (11, 1925496), (12, 1765038), (18, 1176692), (22, 962748), (24, 882519), (33, 641832), (36, 588346), (44, 481374), (47, 450648), (66, 320916), (72, 294173), (88, 240687), (94, 225324), (99, 213944), (132, 160458), (141, 150216), (188, 112662), (198, 106972), (264, 80229), (282, 75108), (376, 56331), (396, 53486), (423, 50072), (517, 40968), (564, 37554), (569, 37224), (792, 26743), (846, 25036), (1034, 20484), (1128, 18777), (1138, 18612), (1551, 13656), (1692, 12518), (1707, 12408), (2068, 10242), (2276, 9306), (3102, 6828), (3384, 6259), (3414, 6204), (4136, 5121), (4552, 4653)]