29951980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{149}}^1$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 69678000

約数和(自身を除く): 39726020

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 149, 190, 230, 298, 380, 437, 460, 529, 596, 745, 874, 1058, 1490, 1748, 2116, 2185, 2645, 2831, 2980, 3427, 4370, 5290, 5662, 6854, 8740, 10051, 10580, 11324, 13708, 14155, 17135, 20102, 28310, 34270, 40204, 50255, 56620, 65113, 68540, 78821, 100510, 130226, 157642, 201020, 260452, 315284, 325565, 394105, 651130, 788210, 1302260, 1497599, 1576420, 2995198, 5990396, 7487995, 14975990, 29951980]

約数ペア:

[(1, 29951980), (2, 14975990), (4, 7487995), (5, 5990396), (10, 2995198), (19, 1576420), (20, 1497599), (23, 1302260), (38, 788210), (46, 651130), (76, 394105), (92, 325565), (95, 315284), (115, 260452), (149, 201020), (190, 157642), (230, 130226), (298, 100510), (380, 78821), (437, 68540), (460, 65113), (529, 56620), (596, 50255), (745, 40204), (874, 34270), (1058, 28310), (1490, 20102), (1748, 17135), (2116, 14155), (2185, 13708), (2645, 11324), (2831, 10580), (2980, 10051), (3427, 8740), (4370, 6854), (5290, 5662)]